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                 return $status;
 165         }
 166
 167         public function preUpgrade() {
 168                 global $wgDBuser, $wgDBpassword;
 169
 170                 $status = $this->getConnection();
 171                 if ( !$status->isOK() ) {
 172                         $this->parent->showStatusError( $status );
 173                         return;
 174                 }
 175                 /**
 176                  * @var $conn DatabaseBase
 177                  */
 178                 $conn = $status->value;
 179                 $conn->selectDB( $this->getVar( 'wgDBname' ) );
 180
 181                 # Determine existing default character set
 182                 if ( $conn->tableExists( "revision", __METHOD__ ) ) {
 183                         $revision = $conn->buildLike( $this->getVar( 'wgDBprefix' ) . 'revision' );
 184                         $res = $conn->query( "SHOW TABLE STATUS $revision", __METHOD__ );
 185                         $row = $conn->fetchObject( $res );
 186                         if ( !$row ) {
 187                                 $this->parent->showMessage( 'config-show-table-status' );
 188                                 $existingSchema = false;
 189                                 $existingEngine = false;
 190                         } else {
 191                                 if ( preg_match( '/^latin1/', $row->Collation ) ) {
 192                                         $existingSchema = 'latin1';
 193                                 } elseif ( preg_match( '/^utf8/', $row->Collation ) ) {
 194                                         $existingSchema = 'utf8';
 195                                 } elseif ( preg_match( '/^binary/', $row->Collation ) ) {
 196                                         $existingSchema = 'binary';
 197                                 } else {
 198                                         $existingSchema = false;
 199                                         $this->parent->showMessage( 'config-unknown-collation' );
 200                                 }
 201                                 if ( isset( $row->Engine ) ) {
 202                                         $existingEngine = $row->Engine;
 203                                 } else {
 204                                         $existingEngine = $row->Type;
 205                                 }
 206                         }
 207                 } else {
 208                         $existingSchema = false;
 209                         $existingEngine = false;
 210                 }
 211
 212                 if ( $existingSchema && $existingSchema != $this->getVar( '_MysqlCharset' ) ) {
 213                         $this->setVar( '_MysqlCharset', $existingSchema );
 214                 }
 215                 if ( $existingEngine && $existingEngine != $this->getVar( '_MysqlEngine' ) ) {
 216                         $this->setVar( '_MysqlEngine', $existingEngine );
 217                 }
 218
 219                 # Normal user and password are selected after this step, so for now
 220                 # just copy these two
 221                 $wgDBuser = $this->getVar( '_InstallUser' );
 222                 $wgDBpassword = $this->getVar( '_InstallPassword' );
 223         }
 224
 225         /**
 226          * Get a list of storage engines that are available and supported
 227          *
 228          * @return array
 229          */
 230         public function getEngines() {
 231                 $status = $this->getConnection();
 232
 233                 /**
 234                  * @var $conn DatabaseBase
 235                  */
 236                 $conn = $status->value;
 237
 238                 $engines = array();
 239                 $res = $conn->query( 'SHOW ENGINES', __METHOD__ );
 240                 foreach ( $res as $row ) {
 241                         if ( $row->Support == 'YES' || $row->Support == 'DEFAULT' ) {
 242                                 $engines[] = $row->Engine;
 243                         }
 244                 }
 245                 $engines = array_intersect( $this->supportedEngines, $engines );
 246                 return $engines;
 247         }
 248
 249         /**
 250          * Get a list of character sets that are available and supported
 251          *
 252          * @return array
 253          */
 254         public function getCharsets() {
 255                 return array( 'binary', 'utf8' );
 256         }
 257
 258         /**
 259          * Return true if the install user can create accounts
 260          *
 261          * @return bool
 262          */
 263         public function canCreateAccounts() {
 264                 $status = $this->getConnection();
 265                 if ( !$status->isOK() ) {
 266                         return false;
 267                 }
 268                 /**
 269                  * @var $conn DatabaseBase
 270                  */
 271                 $conn = $status->value;
 272
 273                 // Get current account name
 274                 $currentName = $conn->selectField( '', 'CURRENT_USER()', '', __METHOD__ );
 275                 $parts = explode( '@', $currentName );
 276                 if ( count( $parts ) != 2 ) {
 277                         return false;
 278                 }
 279                 $quotedUser = $conn->addQuotes( $parts[0] ) .
 280                         '@' . $conn->addQuotes( $parts[1] );
 281
 282                 // The user needs to have INSERT on mysql.* to be able to CREATE USER
 283                 // The grantee will be double-quoted in this query, as required
 284                 $res = $conn->select( 'INFORMATION_SCHEMA.USER_PRIVILEGES', '*',
 285                         array( 'GRANTEE' => $quotedUser ), __METHOD__ );
 286                 $insertMysql = false;
 287                 $grantOptions = array_flip( $this->webUserPrivs );
 288                 foreach ( $res as $row ) {
 289                         if ( $row->PRIVILEGE_TYPE == 'INSERT' ) {
 290                                 $insertMysql = true;
 291                         }
 292                         if ( $row->IS_GRANTABLE ) {
 293                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 294                         }
 295                 }
 296
 297                 // Check for DB-specific privs for mysql.*
 298                 if ( !$insertMysql ) {
 299                         $row = $conn->selectRow( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 300                                 array(
 301                                         'GRANTEE' => $quotedUser,
 302                                         'TABLE_SCHEMA' => 'mysql',
 303                                         'PRIVILEGE_TYPE' => 'INSERT',
 304                                 ), __METHOD__ );
 305                         if ( $row ) {
 306                                 $insertMysql = true;
 307                         }
 308                 }
 309
 310                 if ( !$insertMysql ) {
 311                         return false;
 312                 }
 313
 314                 // Check for DB-level grant options
 315                 $res = $conn->select( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 316                         array(
 317                                 'GRANTEE' => $quotedUser,
 318                                 'IS_GRANTABLE' => 1,
 319                         ), __METHOD__ );
 320                 foreach ( $res as $row ) {
 321                         $regex = $conn->likeToRegex( $row->TABLE_SCHEMA );
 322                         if ( preg_match( $regex, $this->getVar( 'wgDBname' ) ) ) {
 323                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 324                         }
 325                 }
 326                 if ( count( $grantOptions ) ) {
 327                         // Can't grant everything
 328                         return false;
 329                 }
 330                 return true;
 331         }
 332
 333         /**
 334          * @return string
 335          */
 336         public function getSettingsForm() {
 337                 if ( $this->canCreateAccounts() ) {
 338                         $noCreateMsg = false;
 339                 } else {
 340                         $noCreateMsg = 'config-db-web-no-create-privs';
 341                 }
 342                 $s = $this->getWebUserBox( $noCreateMsg );
 343
 344                 // Do engine selector
 345                 $engines = $this->getEngines();
 346                 // If the current default engine is not supported, use an engine that is
 347                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 348                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 349                 }
 350
 351                 $s .= Xml::openElement( 'div', array(
 352                         'id' => 'dbMyisamWarning'
 353                 ));
 354                 $myisamWarning = 'config-mysql-myisam-dep';
 355                 if ( count( $engines ) === 1 ) {
 356                         $myisamWarning = 'config-mysql-only-myisam-dep';
 357                 }
 358                 $s .= $this->parent->getWarningBox( wfMessage( $myisamWarning )->text() );
 359                 $s .= Xml::closeElement( 'div' );
 360
 361                 if ( $this->getVar( '_MysqlEngine' ) != 'MyISAM' ) {
 362                         $s .= Xml::openElement( 'script', array( 'type' => 'text/javascript' ) );
 363                         $s .= '$(\'#dbMyisamWarning\').hide();';
 364                         $s .= Xml::closeElement( 'script' );
 365                 }
 366
 367                 if ( count( $engines ) >= 2 ) {
 368                         // getRadioSet() builds a set of labeled radio buttons.
 369                         // For grep: The following messages are used as the item labels:
 370                         // config-mysql-innodb, config-mysql-myisam
 371                         $s .= $this->getRadioSet( array(
 372                                 'var' => '_MysqlEngine',
 373                                 'label' => 'config-mysql-engine',
 374                                 'itemLabelPrefix' => 'config-mysql-',
 375                                 'values' => $engines,
 376                                 'itemAttribs' => array(
 377                                         'MyISAM' => array(
 378                                                 'class' => 'showHideRadio',
 379                                                 'rel' => 'dbMyisamWarning'
 380                                         ),
 381                                         'InnoDB' => array(
 382                                                 'class' => 'hideShowRadio',
 383                                                 'rel' => 'dbMyisamWarning'
 384                                         )
 385                         )));
 386                         $s .= $this->parent->getHelpBox( 'config-mysql-engine-help' );
 387                 }
 388
 389                 // If the current default charset is not supported, use a charset that is
 390                 $charsets = $this->getCharsets();
 391                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 392                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 393                 }
 394
 395                 // Do charset selector
 396                 if ( count( $charsets ) >= 2 ) {
 397                         // getRadioSet() builds a set of labeled radio buttons.
 398                         // For grep: The following messages are used as the item labels:
 399                         // config-mysql-binary, config-mysql-utf8
 400                         $s .= $this->getRadioSet( array(
 401                                 'var' => '_MysqlCharset',
 402                                 'label' => 'config-mysql-charset',
 403                                 'itemLabelPrefix' => 'config-mysql-',
 404                                 'values' => $charsets
 405                         ));
 406                         $s .= $this->parent->getHelpBox( 'config-mysql-charset-help' );
 407                 }
 408
 409                 return $s;
 410         }
 411
 412         /**
 413          * @return Status
 414          */
 415         public function submitSettingsForm() {
 416                 $this->setVarsFromRequest( array( '_MysqlEngine', '_MysqlCharset' ) );
 417                 $status = $this->submitWebUserBox();
 418                 if ( !$status->isOK() ) {
 419                         return $status;
 420                 }
 421
 422                 // Validate the create checkbox
 423                 $canCreate = $this->canCreateAccounts();
 424                 if ( !$canCreate ) {
 425                         $this->setVar( '_CreateDBAccount', false );
 426                         $create = false;
 427                 } else {
 428                         $create = $this->getVar( '_CreateDBAccount' );
 429                 }
 430
 431                 if ( !$create ) {
 432                         // Test the web account
 433                         try {
 434                                 new DatabaseMysql(
 435                                         $this->getVar( 'wgDBserver' ),
 436                                         $this->getVar( 'wgDBuser' ),
 437                                         $this->getVar( 'wgDBpassword' ),
 438                                         false,
 439                                         0,
 440                                         $this->getVar( 'wgDBprefix' )
 441                                 );
 442                         } catch ( DBConnectionError $e ) {
 443                                 return Status::newFatal( 'config-connection-error', $e->getMessage() );
 444                         }
 445                 }
 446
 447                 // Validate engines and charsets
 448                 // This is done pre-submit already so it's just for security
 449                 $engines = $this->getEngines();
 450                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 451                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 452                 }
 453                 $charsets = $this->getCharsets();
 454                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 455                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 456                 }
 457                 return Status::newGood();
 458         }
 459
 460         public function preInstall() {
 461                 # Add our user callback to installSteps, right before the tables are created.
 462                 $callback = array(
 463                         'name' => 'user',
 464                         'callback' => array( $this, 'setupUser' ),
 465                 );
 466                 $this->parent->addInstallStep( $callback, 'tables' );
 467         }
 468
 469         /**
 470          * @return Status
 471          */
 472         public function setupDatabase() {
 473                 $status = $this->getConnection();
 474                 if ( !$status->isOK() ) {
 475                         return $status;
 476                 }
 477                 $conn = $status->value;
 478                 $dbName = $this->getVar( 'wgDBname' );
 479                 if ( !$conn->selectDB( $dbName ) ) {
 480                         $conn->query( "CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ) . "CHARACTER SET utf8", __METHOD__ );
 481                         $conn->selectDB( $dbName );
 482                 }
 483                 $this->setupSchemaVars();
 484                 return $status;
 485         }
 486
 487         /**
 488          * @return Status
 489          */
 490         public function setupUser() {
 491                 $dbUser = $this->getVar( 'wgDBuser' );
 492                 if ( $dbUser == $this->getVar( '_InstallUser' ) ) {
 493                         return Status::newGood();
 494                 }
 495                 $status = $this->getConnection();
 496                 if ( !$status->isOK() ) {
 497                         return $status;
 498                 }
 499
 500                 $this->setupSchemaVars();
 501                 $dbName = $this->getVar( 'wgDBname' );
 502                 $this->db->selectDB( $dbName );
 503                 $server = $this->getVar( 'wgDBserver' );
 504                 $password = $this->getVar( 'wgDBpassword' );
 505                 $grantableNames = array();
 506
 507                 if ( $this->getVar( '_CreateDBAccount' ) ) {
 508                         // Before we blindly try to create a user that already has access,
 509                         try { // first attempt to connect to the database
 510                                 new DatabaseMysql(
 511                                         $server,
 512                                         $dbUser,
 513                                         $password,
 514                                         false,
 515                                         0,
 516                                         $this->getVar( 'wgDBprefix' )
 517                                 );
 518                                 $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 519                                 $tryToCreate = false;
 520                         } catch ( DBConnectionError $e ) {
 521                                 $tryToCreate = true;
 522                         }
 523                 } else {
 524                         $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 525                         $tryToCreate = false;
 526                 }
 527
 528                 if ( $tryToCreate ) {
 529                         $createHostList = array(
 530                                 $server,
 531                                 'localhost',
 532                                 'localhost.localdomain',
 533                                 '%'
 534                         );
 535
 536                         $createHostList = array_unique( $createHostList );
 537                         $escPass = $this->db->addQuotes( $password );
 538
 539                         foreach ( $createHostList as $host ) {
 540                                 $fullName = $this->buildFullUserName( $dbUser, $host );
 541                                 if ( !$this->userDefinitelyExists( $dbUser, $host ) ) {
 542                                         try {
 543                                                 $this->db->begin( __METHOD__ );
 544                                                 $this->db->query( "CREATE USER $fullName IDENTIFIED BY $escPass", __METHOD__ );
 545                                                 $this->db->commit( __METHOD__ );
 546                                                 $grantableNames[] = $fullName;
 547                                         } catch ( DBQueryError $dqe ) {
 548                                                 if ( $this->db->lastErrno() == 1396 /* ER_CANNOT_USER */ ) {
 549                                                         // User (probably) already exists
 550                                                         $this->db->rollback( __METHOD__ );
 551                                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 552                                                         $grantableNames[] = $fullName;
 553                                                         break;
 554                                                 } else {
 555                                                         // If we couldn't create for some bizzare reason and the
 556                                                         // user probably doesn't exist, skip the grant
 557                                                         $this->db->rollback( __METHOD__ );
 558                                                         $status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
 559                                                 }
 560                                         }
 561                                 } else {
 562                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 563                                         $grantableNames[] = $fullName;
 564                                         break;
 565                                 }
 566                         }
 567                 }
 568
 569                 // Try to grant to all the users we know exist or we were able to create
 570                 $dbAllTables = $this->db->addIdentifierQuotes( $dbName ) . '.*';
 571                 foreach ( $grantableNames as $name ) {
 572                         try {
 573                                 $this->db->begin( __METHOD__ );
 574                                 $this->db->query( "GRANT ALL PRIVILEGES ON $dbAllTables TO $name", __METHOD__ );
 575                                 $this->db->commit( __METHOD__ );
 576                         } catch ( DBQueryError $dqe ) {
 577                                 $this->db->rollback( __METHOD__ );
 578                                 $status->fatal( 'config-install-user-grant-failed', $dbUser, $dqe->getText() );
 579                         }
 580                 }
 581
 582                 return $status;
 583         }
 584
 585         /**
 586          * Return a formal 'User'@'Host' username for use in queries
 587          * @param string $name Username, quotes will be added
 588          * @param string $host Hostname, quotes will be added
 589          * @return String
 590          */
 591         private function buildFullUserName( $name, $host ) {
 592                 return $this->db->addQuotes( $name ) . '@' . $this->db->addQuotes( $host );
 593         }
 594
 595         /**
 596          * Try to see if the user account exists. Our "superuser" may not have
 597          * access to mysql.user, so false means "no" or "maybe"
 598          * @param string $host Hostname to check
 599          * @param string $user Username to check
 600          * @return boolean
 601          */
 602         private function userDefinitelyExists( $host, $user ) {
 603                 try {
 604                         $res = $this->db->selectRow( 'mysql.user', array( 'Host', 'User' ),
 605                                 array( 'Host' => $host, 'User' => $user ), __METHOD__ );
 606                         return (bool)$res;
 607                 } catch ( DBQueryError $dqe ) {
 608                         return false;
 609                 }
 610
 611         }
 612
 613         /**
 614          * Return any table options to be applied to all tables that don't
 615          * override them.
 616          *
 617          * @return String
 618          */
 619         protected function getTableOptions() {
 620                 $options = array();
 621                 if ( $this->getVar( '_MysqlEngine' ) !== null ) {
 622                         $options[] = "ENGINE=" . $this->getVar( '_MysqlEngine' );
 623                 }
 624                 if ( $this->getVar( '_MysqlCharset' ) !== null ) {
 625                         $options[] = 'DEFAULT CHARSET=' . $this->getVar( '_MysqlCharset' );
 626                 }
 627                 return implode( ', ', $options );
 628         }
 629
 630         /**
 631          * Get variables to substitute into tables.sql and the SQL patch files.
 632          *
 633          * @return array
 634          */
 635         public function getSchemaVars() {
 636                 return array(
 637                         'wgDBTableOptions' => $this->getTableOptions(),
 638                         'wgDBname' => $this->getVar( 'wgDBname' ),
 639                         'wgDBuser' => $this->getVar( 'wgDBuser' ),
 640                         'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
 641                 );
 642         }
 643
 644         public function getLocalSettings() {
 645                 $dbmysql5 = wfBoolToStr( $this->getVar( 'wgDBmysql5', true ) );
 646                 $prefix = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBprefix' ) );
 647                 $tblOpts = LocalSettingsGenerator::escapePhpString( $this->getTableOptions() );
 648                 return
 649 "# MySQL specific settings
 650 \$wgDBprefix = \"{$prefix}\";
 651
 652 # MySQL table options to use during installation or update
 653 \$wgDBTableOptions = \"{$tblOpts}\";
 654
 655 # Experimental charset support for MySQL 5.0.
 656 \$wgDBmysql5 = {$dbmysql5};";
 657         }
 658 }