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         /**
  68          * @return Bool
  69          */
  70         public function isCompiled() {
  71                 return self::checkExtension( 'mysql' ) || self::checkExtension( 'mysqli' );
  72         }
  73
  74         /**
  75          * @return array
  76          */
  77         public function getGlobalDefaults() {
  78                 return array();
  79         }
  80
  81         /**
  82          * @return string
  83          */
  84         public function getConnectForm() {
  85                 return $this->getTextBox(
  86                         'wgDBserver',
  87                         'config-db-host',
  88                         array(),
  89                         $this->parent->getHelpBox( 'config-db-host-help' )
  90                 ) .
  91                         Html::openElement( 'fieldset' ) .
  92                         Html::element( 'legend', array(), wfMessage( 'config-db-wiki-settings' )->text() ) .
  93                         $this->getTextBox( 'wgDBname', 'config-db-name', array( 'dir' => 'ltr' ),
  94                                 $this->parent->getHelpBox( 'config-db-name-help' ) ) .
  95                         $this->getTextBox( 'wgDBprefix', 'config-db-prefix', array( 'dir' => 'ltr' ),
  96                                 $this->parent->getHelpBox( 'config-db-prefix-help' ) ) .
  97                         Html::closeElement( 'fieldset' ) .
  98                         $this->getInstallUserBox();
  99         }
 100
 101         public function submitConnectForm() {
 102                 // Get variables from the request.
 103                 $newValues = $this->setVarsFromRequest( array( 'wgDBserver', 'wgDBname', 'wgDBprefix' ) );
 104
 105                 // Validate them.
 106                 $status = Status::newGood();
 107                 if ( !strlen( $newValues['wgDBserver'] ) ) {
 108                         $status->fatal( 'config-missing-db-host' );
 109                 }
 110                 if ( !strlen( $newValues['wgDBname'] ) ) {
 111                         $status->fatal( 'config-missing-db-name' );
 112                 } elseif ( !preg_match( '/^[a-z0-9+_-]+$/i', $newValues['wgDBname'] ) ) {
 113                         $status->fatal( 'config-invalid-db-name', $newValues['wgDBname'] );
 114                 }
 115                 if ( !preg_match( '/^[a-z0-9_-]*$/i', $newValues['wgDBprefix'] ) ) {
 116                         $status->fatal( 'config-invalid-db-prefix', $newValues['wgDBprefix'] );
 117                 }
 118                 if ( !$status->isOK() ) {
 119                         return $status;
 120                 }
 121
 122                 // Submit user box
 123                 $status = $this->submitInstallUserBox();
 124                 if ( !$status->isOK() ) {
 125                         return $status;
 126                 }
 127
 128                 // Try to connect
 129                 $status = $this->getConnection();
 130                 if ( !$status->isOK() ) {
 131                         return $status;
 132                 }
 133                 /**
 134                  * @var $conn DatabaseBase
 135                  */
 136                 $conn = $status->value;
 137
 138                 // Check version
 139                 $version = $conn->getServerVersion();
 140                 if ( version_compare( $version, $this->minimumVersion ) < 0 ) {
 141                         return Status::newFatal( 'config-mysql-old', $this->minimumVersion, $version );
 142                 }
 143
 144                 return $status;
 145         }
 146
 147         /**
 148          * @return Status
 149          */
 150         public function openConnection() {
 151                 $status = Status::newGood();
 152                 try {
 153                         $db = DatabaseBase::factory( 'mysql', array(
 154                                 'host' => $this->getVar( 'wgDBserver' ),
 155                                 'user' => $this->getVar( '_InstallUser' ),
 156                                 'password' => $this->getVar( '_InstallPassword' ),
 157                                 'dbname' => false,
 158                                 'flags' => 0,
 159                                 'tablePrefix' => $this->getVar( 'wgDBprefix' ) ) );
 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                 /** @var $conn DatabaseBase */
 272                 $conn = $status->value;
 273
 274                 // Get current account name
 275                 $currentName = $conn->selectField( '', 'CURRENT_USER()', '', __METHOD__ );
 276                 $parts = explode( '@', $currentName );
 277                 if ( count( $parts ) != 2 ) {
 278                         return false;
 279                 }
 280                 $quotedUser = $conn->addQuotes( $parts[0] ) .
 281                         '@' . $conn->addQuotes( $parts[1] );
 282
 283                 // The user needs to have INSERT on mysql.* to be able to CREATE USER
 284                 // The grantee will be double-quoted in this query, as required
 285                 $res = $conn->select( 'INFORMATION_SCHEMA.USER_PRIVILEGES', '*',
 286                         array( 'GRANTEE' => $quotedUser ), __METHOD__ );
 287                 $insertMysql = false;
 288                 $grantOptions = array_flip( $this->webUserPrivs );
 289                 foreach ( $res as $row ) {
 290                         if ( $row->PRIVILEGE_TYPE == 'INSERT' ) {
 291                                 $insertMysql = true;
 292                         }
 293                         if ( $row->IS_GRANTABLE ) {
 294                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 295                         }
 296                 }
 297
 298                 // Check for DB-specific privs for mysql.*
 299                 if ( !$insertMysql ) {
 300                         $row = $conn->selectRow( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 301                                 array(
 302                                         'GRANTEE' => $quotedUser,
 303                                         'TABLE_SCHEMA' => 'mysql',
 304                                         'PRIVILEGE_TYPE' => 'INSERT',
 305                                 ), __METHOD__ );
 306                         if ( $row ) {
 307                                 $insertMysql = true;
 308                         }
 309                 }
 310
 311                 if ( !$insertMysql ) {
 312                         return false;
 313                 }
 314
 315                 // Check for DB-level grant options
 316                 $res = $conn->select( 'INFORMATION_SCHEMA.SCHEMA_PRIVILEGES', '*',
 317                         array(
 318                                 'GRANTEE' => $quotedUser,
 319                                 'IS_GRANTABLE' => 1,
 320                         ), __METHOD__ );
 321                 foreach ( $res as $row ) {
 322                         $regex = $conn->likeToRegex( $row->TABLE_SCHEMA );
 323                         if ( preg_match( $regex, $this->getVar( 'wgDBname' ) ) ) {
 324                                 unset( $grantOptions[$row->PRIVILEGE_TYPE] );
 325                         }
 326                 }
 327                 if ( count( $grantOptions ) ) {
 328                         // Can't grant everything
 329                         return false;
 330                 }
 331
 332                 return true;
 333         }
 334
 335         /**
 336          * @return string
 337          */
 338         public function getSettingsForm() {
 339                 if ( $this->canCreateAccounts() ) {
 340                         $noCreateMsg = false;
 341                 } else {
 342                         $noCreateMsg = 'config-db-web-no-create-privs';
 343                 }
 344                 $s = $this->getWebUserBox( $noCreateMsg );
 345
 346                 // Do engine selector
 347                 $engines = $this->getEngines();
 348                 // If the current default engine is not supported, use an engine that is
 349                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 350                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 351                 }
 352
 353                 $s .= Xml::openElement( 'div', array(
 354                         'id' => 'dbMyisamWarning'
 355                 ) );
 356                 $myisamWarning = 'config-mysql-myisam-dep';
 357                 if ( count( $engines ) === 1 ) {
 358                         $myisamWarning = 'config-mysql-only-myisam-dep';
 359                 }
 360                 $s .= $this->parent->getWarningBox( wfMessage( $myisamWarning )->text() );
 361                 $s .= Xml::closeElement( 'div' );
 362
 363                 if ( $this->getVar( '_MysqlEngine' ) != 'MyISAM' ) {
 364                         $s .= Xml::openElement( 'script', array( 'type' => 'text/javascript' ) );
 365                         $s .= '$(\'#dbMyisamWarning\').hide();';
 366                         $s .= Xml::closeElement( 'script' );
 367                 }
 368
 369                 if ( count( $engines ) >= 2 ) {
 370                         // getRadioSet() builds a set of labeled radio buttons.
 371                         // For grep: The following messages are used as the item labels:
 372                         // config-mysql-innodb, config-mysql-myisam
 373                         $s .= $this->getRadioSet( array(
 374                                 'var' => '_MysqlEngine',
 375                                 'label' => 'config-mysql-engine',
 376                                 'itemLabelPrefix' => 'config-mysql-',
 377                                 'values' => $engines,
 378                                 'itemAttribs' => array(
 379                                         'MyISAM' => array(
 380                                                 'class' => 'showHideRadio',
 381                                                 'rel' => 'dbMyisamWarning'
 382                                         ),
 383                                         'InnoDB' => array(
 384                                                 'class' => 'hideShowRadio',
 385                                                 'rel' => 'dbMyisamWarning'
 386                                         )
 387                                 )
 388                         ) );
 389                         $s .= $this->parent->getHelpBox( 'config-mysql-engine-help' );
 390                 }
 391
 392                 // If the current default charset is not supported, use a charset that is
 393                 $charsets = $this->getCharsets();
 394                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 395                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 396                 }
 397
 398                 // Do charset selector
 399                 if ( count( $charsets ) >= 2 ) {
 400                         // getRadioSet() builds a set of labeled radio buttons.
 401                         // For grep: The following messages are used as the item labels:
 402                         // config-mysql-binary, config-mysql-utf8
 403                         $s .= $this->getRadioSet( array(
 404                                 'var' => '_MysqlCharset',
 405                                 'label' => 'config-mysql-charset',
 406                                 'itemLabelPrefix' => 'config-mysql-',
 407                                 'values' => $charsets
 408                         ) );
 409                         $s .= $this->parent->getHelpBox( 'config-mysql-charset-help' );
 410                 }
 411
 412                 return $s;
 413         }
 414
 415         /**
 416          * @return Status
 417          */
 418         public function submitSettingsForm() {
 419                 $this->setVarsFromRequest( array( '_MysqlEngine', '_MysqlCharset' ) );
 420                 $status = $this->submitWebUserBox();
 421                 if ( !$status->isOK() ) {
 422                         return $status;
 423                 }
 424
 425                 // Validate the create checkbox
 426                 $canCreate = $this->canCreateAccounts();
 427                 if ( !$canCreate ) {
 428                         $this->setVar( '_CreateDBAccount', false );
 429                         $create = false;
 430                 } else {
 431                         $create = $this->getVar( '_CreateDBAccount' );
 432                 }
 433
 434                 if ( !$create ) {
 435                         // Test the web account
 436                         try {
 437                                 DatabaseBase::factory( 'mysql', array(
 438                                         'host' => $this->getVar( 'wgDBserver' ),
 439                                         'user' => $this->getVar( 'wgDBuser' ),
 440                                         'password' => $this->getVar( 'wgDBpassword' ),
 441                                         'dbname' => false,
 442                                         'flags' => 0,
 443                                         'tablePrefix' => $this->getVar( 'wgDBprefix' )
 444                                 ) );
 445                         } catch ( DBConnectionError $e ) {
 446                                 return Status::newFatal( 'config-connection-error', $e->getMessage() );
 447                         }
 448                 }
 449
 450                 // Validate engines and charsets
 451                 // This is done pre-submit already so it's just for security
 452                 $engines = $this->getEngines();
 453                 if ( !in_array( $this->getVar( '_MysqlEngine' ), $engines ) ) {
 454                         $this->setVar( '_MysqlEngine', reset( $engines ) );
 455                 }
 456                 $charsets = $this->getCharsets();
 457                 if ( !in_array( $this->getVar( '_MysqlCharset' ), $charsets ) ) {
 458                         $this->setVar( '_MysqlCharset', reset( $charsets ) );
 459                 }
 460
 461                 return Status::newGood();
 462         }
 463
 464         public function preInstall() {
 465                 # Add our user callback to installSteps, right before the tables are created.
 466                 $callback = array(
 467                         'name' => 'user',
 468                         'callback' => array( $this, 'setupUser' ),
 469                 );
 470                 $this->parent->addInstallStep( $callback, 'tables' );
 471         }
 472
 473         /**
 474          * @return Status
 475          */
 476         public function setupDatabase() {
 477                 $status = $this->getConnection();
 478                 if ( !$status->isOK() ) {
 479                         return $status;
 480                 }
 481                 /** @var DatabaseBase $conn */
 482                 $conn = $status->value;
 483                 $dbName = $this->getVar( 'wgDBname' );
 484                 if ( !$conn->selectDB( $dbName ) ) {
 485                         $conn->query(
 486                                 "CREATE DATABASE " . $conn->addIdentifierQuotes( $dbName ) . "CHARACTER SET utf8",
 487                                 __METHOD__
 488                         );
 489                         $conn->selectDB( $dbName );
 490                 }
 491                 $this->setupSchemaVars();
 492
 493                 return $status;
 494         }
 495
 496         /**
 497          * @return Status
 498          */
 499         public function setupUser() {
 500                 $dbUser = $this->getVar( 'wgDBuser' );
 501                 if ( $dbUser == $this->getVar( '_InstallUser' ) ) {
 502                         return Status::newGood();
 503                 }
 504                 $status = $this->getConnection();
 505                 if ( !$status->isOK() ) {
 506                         return $status;
 507                 }
 508
 509                 $this->setupSchemaVars();
 510                 $dbName = $this->getVar( 'wgDBname' );
 511                 $this->db->selectDB( $dbName );
 512                 $server = $this->getVar( 'wgDBserver' );
 513                 $password = $this->getVar( 'wgDBpassword' );
 514                 $grantableNames = array();
 515
 516                 if ( $this->getVar( '_CreateDBAccount' ) ) {
 517                         // Before we blindly try to create a user that already has access,
 518                         try { // first attempt to connect to the database
 519                                 DatabaseBase::factory( 'mysql', array(
 520                                         'host' => $server,
 521                                         'user' => $dbUser,
 522                                         'password' => $password,
 523                                         'dbname' => false,
 524                                         'flags' => 0,
 525                                         'tablePrefix' => $this->getVar( 'wgDBprefix' )
 526                                 ) );
 527                                 $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 528                                 $tryToCreate = false;
 529                         } catch ( DBConnectionError $e ) {
 530                                 $tryToCreate = true;
 531                         }
 532                 } else {
 533                         $grantableNames[] = $this->buildFullUserName( $dbUser, $server );
 534                         $tryToCreate = false;
 535                 }
 536
 537                 if ( $tryToCreate ) {
 538                         $createHostList = array(
 539                                 $server,
 540                                 'localhost',
 541                                 'localhost.localdomain',
 542                                 '%'
 543                         );
 544
 545                         $createHostList = array_unique( $createHostList );
 546                         $escPass = $this->db->addQuotes( $password );
 547
 548                         foreach ( $createHostList as $host ) {
 549                                 $fullName = $this->buildFullUserName( $dbUser, $host );
 550                                 if ( !$this->userDefinitelyExists( $dbUser, $host ) ) {
 551                                         try {
 552                                                 $this->db->begin( __METHOD__ );
 553                                                 $this->db->query( "CREATE USER $fullName IDENTIFIED BY $escPass", __METHOD__ );
 554                                                 $this->db->commit( __METHOD__ );
 555                                                 $grantableNames[] = $fullName;
 556                                         } catch ( DBQueryError $dqe ) {
 557                                                 if ( $this->db->lastErrno() == 1396 /* ER_CANNOT_USER */ ) {
 558                                                         // User (probably) already exists
 559                                                         $this->db->rollback( __METHOD__ );
 560                                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 561                                                         $grantableNames[] = $fullName;
 562                                                         break;
 563                                                 } else {
 564                                                         // If we couldn't create for some bizzare reason and the
 565                                                         // user probably doesn't exist, skip the grant
 566                                                         $this->db->rollback( __METHOD__ );
 567                                                         $status->warning( 'config-install-user-create-failed', $dbUser, $dqe->getText() );
 568                                                 }
 569                                         }
 570                                 } else {
 571                                         $status->warning( 'config-install-user-alreadyexists', $dbUser );
 572                                         $grantableNames[] = $fullName;
 573                                         break;
 574                                 }
 575                         }
 576                 }
 577
 578                 // Try to grant to all the users we know exist or we were able to create
 579                 $dbAllTables = $this->db->addIdentifierQuotes( $dbName ) . '.*';
 580                 foreach ( $grantableNames as $name ) {
 581                         try {
 582                                 $this->db->begin( __METHOD__ );
 583                                 $this->db->query( "GRANT ALL PRIVILEGES ON $dbAllTables TO $name", __METHOD__ );
 584                                 $this->db->commit( __METHOD__ );
 585                         } catch ( DBQueryError $dqe ) {
 586                                 $this->db->rollback( __METHOD__ );
 587                                 $status->fatal( 'config-install-user-grant-failed', $dbUser, $dqe->getText() );
 588                         }
 589                 }
 590
 591                 return $status;
 592         }
 593
 594         /**
 595          * Return a formal 'User'@'Host' username for use in queries
 596          * @param string $name Username, quotes will be added
 597          * @param string $host Hostname, quotes will be added
 598          * @return String
 599          */
 600         private function buildFullUserName( $name, $host ) {
 601                 return $this->db->addQuotes( $name ) . '@' . $this->db->addQuotes( $host );
 602         }
 603
 604         /**
 605          * Try to see if the user account exists. Our "superuser" may not have
 606          * access to mysql.user, so false means "no" or "maybe"
 607          * @param string $host Hostname to check
 608          * @param string $user Username to check
 609          * @return boolean
 610          */
 611         private function userDefinitelyExists( $host, $user ) {
 612                 try {
 613                         $res = $this->db->selectRow( 'mysql.user', array( 'Host', 'User' ),
 614                                 array( 'Host' => $host, 'User' => $user ), __METHOD__ );
 615
 616                         return (bool)$res;
 617                 } catch ( DBQueryError $dqe ) {
 618                         return false;
 619                 }
 620         }
 621
 622         /**
 623          * Return any table options to be applied to all tables that don't
 624          * override them.
 625          *
 626          * @return String
 627          */
 628         protected function getTableOptions() {
 629                 $options = array();
 630                 if ( $this->getVar( '_MysqlEngine' ) !== null ) {
 631                         $options[] = "ENGINE=" . $this->getVar( '_MysqlEngine' );
 632                 }
 633                 if ( $this->getVar( '_MysqlCharset' ) !== null ) {
 634                         $options[] = 'DEFAULT CHARSET=' . $this->getVar( '_MysqlCharset' );
 635                 }
 636
 637                 return implode( ', ', $options );
 638         }
 639
 640         /**
 641          * Get variables to substitute into tables.sql and the SQL patch files.
 642          *
 643          * @return array
 644          */
 645         public function getSchemaVars() {
 646                 return array(
 647                         'wgDBTableOptions' => $this->getTableOptions(),
 648                         'wgDBname' => $this->getVar( 'wgDBname' ),
 649                         'wgDBuser' => $this->getVar( 'wgDBuser' ),
 650                         'wgDBpassword' => $this->getVar( 'wgDBpassword' ),
 651                 );
 652         }
 653
 654         public function getLocalSettings() {
 655                 $dbmysql5 = wfBoolToStr( $this->getVar( 'wgDBmysql5', true ) );
 656                 $prefix = LocalSettingsGenerator::escapePhpString( $this->getVar( 'wgDBprefix' ) );
 657                 $tblOpts = LocalSettingsGenerator::escapePhpString( $this->getTableOptions() );
 658
 659                 return "# MySQL specific settings
 660 \$wgDBprefix = \"{$prefix}\";
 661
 662 # MySQL table options to use during installation or update
 663 \$wgDBTableOptions = \"{$tblOpts}\";
 664
 665 # Experimental charset support for MySQL 5.0.
 666 \$wgDBmysql5 = {$dbmysql5};";
 667         }
 668 }