includes/installer/Installer.php

   1 <?php
   2 /**
   3  * Base code for MediaWiki installer.
   4  *
   5  * @file
   6  * @ingroup Deployment
   7  */
   8
   9 /**
  10  * This documentation group collects source code files with deployment functionality.
  11  *
  12  * @defgroup Deployment Deployment
  13  */
  14
  15 /**
  16  * Base installer class.
  17  *
  18  * This class provides the base for installation and update functionality
  19  * for both MediaWiki core and extensions.
  20  *
  21  * @ingroup Deployment
  22  * @since 1.17
  23  */
  24 abstract class Installer {
  25
  26         // This is the absolute minimum PHP version we can support
  27         const MINIMUM_PHP_VERSION = '5.2.3';
  28
  29         /**
  30          * @var array
  31          */
  32         protected $settings;
  33
  34         /**
  35          * Cached DB installer instances, access using getDBInstaller().
  36          *
  37          * @var array
  38          */
  39         protected $dbInstallers = array();
  40
  41         /**
  42          * Minimum memory size in MB.
  43          *
  44          * @var integer
  45          */
  46         protected $minMemorySize = 50;
  47
  48         /**
  49          * Cached Title, used by parse().
  50          *
  51          * @var Title
  52          */
  53         protected $parserTitle;
  54
  55         /**
  56          * Cached ParserOptions, used by parse().
  57          *
  58          * @var ParserOptions
  59          */
  60         protected $parserOptions;
  61
  62         /**
  63          * Known database types. These correspond to the class names <type>Installer,
  64          * and are also MediaWiki database types valid for $wgDBtype.
  65          *
  66          * To add a new type, create a <type>Installer class and a Database<type>
  67          * class, and add a config-type-<type> message to MessagesEn.php.
  68          *
  69          * @var array
  70          */
  71         protected static $dbTypes = array(
  72                 'mysql',
  73                 'postgres',
  74                 'oracle',
  75                 'sqlite',
  76                 'ibm_db2',
  77         );
  78
  79         /**
  80          * A list of environment check methods called by doEnvironmentChecks().
  81          * These may output warnings using showMessage(), and/or abort the
  82          * installation process by returning false.
  83          *
  84          * @var array
  85          */
  86         protected $envChecks = array(
  87                 'envCheckDB',
  88                 'envCheckRegisterGlobals',
  89                 'envCheckBrokenXML',
  90                 'envCheckPHP531',
  91                 'envCheckMagicQuotes',
  92                 'envCheckMagicSybase',
  93                 'envCheckMbstring',
  94                 'envCheckZE1',
  95                 'envCheckSafeMode',
  96                 'envCheckXML',
  97                 'envCheckPCRE',
  98                 'envCheckMemory',
  99                 'envCheckCache',
 100                 'envCheckDiff3',
 101                 'envCheckGraphics',
 102                 'envCheckServer',
 103                 'envCheckPath',
 104                 'envCheckExtension',
 105                 'envCheckShellLocale',
 106                 'envCheckUploadsDirectory',
 107                 'envCheckLibicu',
 108                 'envCheckSuhosinMaxValueLength',
 109         );
 110
 111         /**
 112          * MediaWiki configuration globals that will eventually be passed through
 113          * to LocalSettings.php. The names only are given here, the defaults
 114          * typically come from DefaultSettings.php.
 115          *
 116          * @var array
 117          */
 118         protected $defaultVarNames = array(
 119                 'wgSitename',
 120                 'wgPasswordSender',
 121                 'wgLanguageCode',
 122                 'wgRightsIcon',
 123                 'wgRightsText',
 124                 'wgRightsUrl',
 125                 'wgMainCacheType',
 126                 'wgEnableEmail',
 127                 'wgEnableUserEmail',
 128                 'wgEnotifUserTalk',
 129                 'wgEnotifWatchlist',
 130                 'wgEmailAuthentication',
 131                 'wgDBtype',
 132                 'wgDiff3',
 133                 'wgImageMagickConvertCommand',
 134                 'IP',
 135                 'wgServer',
 136                 'wgScriptPath',
 137                 'wgScriptExtension',
 138                 'wgMetaNamespace',
 139                 'wgDeletedDirectory',
 140                 'wgEnableUploads',
 141                 'wgLogo',
 142                 'wgShellLocale',
 143                 'wgSecretKey',
 144                 'wgUseInstantCommons',
 145                 'wgUpgradeKey',
 146                 'wgDefaultSkin',
 147                 'wgResourceLoaderMaxQueryLength',
 148         );
 149
 150         /**
 151          * Variables that are stored alongside globals, and are used for any
 152          * configuration of the installation process aside from the MediaWiki
 153          * configuration. Map of names to defaults.
 154          *
 155          * @var array
 156          */
 157         protected $internalDefaults = array(
 158                 '_UserLang' => 'en',
 159                 '_Environment' => false,
 160                 '_CompiledDBs' => array(),
 161                 '_SafeMode' => false,
 162                 '_RaiseMemory' => false,
 163                 '_UpgradeDone' => false,
 164                 '_InstallDone' => false,
 165                 '_Caches' => array(),
 166                 '_InstallPassword' => '',
 167                 '_SameAccount' => true,
 168                 '_CreateDBAccount' => false,
 169                 '_NamespaceType' => 'site-name',
 170                 '_AdminName' => '', // will be set later, when the user selects language
 171                 '_AdminPassword' => '',
 172                 '_AdminPassword2' => '',
 173                 '_AdminEmail' => '',
 174                 '_Subscribe' => false,
 175                 '_SkipOptional' => 'continue',
 176                 '_RightsProfile' => 'wiki',
 177                 '_LicenseCode' => 'none',
 178                 '_CCDone' => false,
 179                 '_Extensions' => array(),
 180                 '_MemCachedServers' => '',
 181                 '_UpgradeKeySupplied' => false,
 182                 '_ExistingDBSettings' => false,
 183         );
 184
 185         /**
 186          * The actual list of installation steps. This will be initialized by getInstallSteps()
 187          *
 188          * @var array
 189          */
 190         private $installSteps = array();
 191
 192         /**
 193          * Extra steps for installation, for things like DatabaseInstallers to modify
 194          *
 195          * @var array
 196          */
 197         protected $extraInstallSteps = array();
 198
 199         /**
 200          * Known object cache types and the functions used to test for their existence.
 201          *
 202          * @var array
 203          */
 204         protected $objectCaches = array(
 205                 'xcache' => 'xcache_get',
 206                 'apc' => 'apc_fetch',
 207                 'eaccel' => 'eaccelerator_get',
 208                 'wincache' => 'wincache_ucache_get'
 209         );
 210
 211         /**
 212          * User rights profiles.
 213          *
 214          * @var array
 215          */
 216         public $rightsProfiles = array(
 217                 'wiki' => array(),
 218                 'no-anon' => array(
 219                         '*' => array( 'edit' => false )
 220                 ),
 221                 'fishbowl' => array(
 222                         '*' => array(
 223                                 'createaccount' => false,
 224                                 'edit' => false,
 225                         ),
 226                 ),
 227                 'private' => array(
 228                         '*' => array(
 229                                 'createaccount' => false,
 230                                 'edit' => false,
 231                                 'read' => false,
 232                         ),
 233                 ),
 234         );
 235
 236         /**
 237          * License types.
 238          *
 239          * @var array
 240          */
 241         public $licenses = array(
 242                 'cc-by' => array(
 243                         'url' => 'http://creativecommons.org/licenses/by/3.0/',
 244                         'icon' => '{$wgStylePath}/common/images/cc-by.png',
 245                 ),
 246                 'cc-by-sa' => array(
 247                         'url' => 'http://creativecommons.org/licenses/by-sa/3.0/',
 248                         'icon' => '{$wgStylePath}/common/images/cc-by-sa.png',
 249                 ),
 250                 'cc-by-nc-sa' => array(
 251                         'url' => 'http://creativecommons.org/licenses/by-nc-sa/3.0/',
 252                         'icon' => '{$wgStylePath}/common/images/cc-by-nc-sa.png',
 253                 ),
 254                 'cc-0' => array(
 255                         'url' => 'https://creativecommons.org/publicdomain/zero/1.0/',
 256                         'icon' => '{$wgStylePath}/common/images/cc-0.png',
 257                 ),
 258                 'pd' => array(
 259                         'url' => '',
 260                         'icon' => '{$wgStylePath}/common/images/public-domain.png',
 261                 ),
 262                 'gfdl' => array(
 263                         'url' => 'http://www.gnu.org/copyleft/fdl.html',
 264                         'icon' => '{$wgStylePath}/common/images/gnu-fdl.png',
 265                 ),
 266                 'none' => array(
 267                         'url' => '',
 268                         'icon' => '',
 269                         'text' => ''
 270                 ),
 271                 'cc-choose' => array(
 272                         // Details will be filled in by the selector.
 273                         'url' => '',
 274                         'icon' => '',
 275                         'text' => '',
 276                 ),
 277         );
 278
 279         /**
 280          * URL to mediawiki-announce subscription
 281          */
 282         protected $mediaWikiAnnounceUrl = 'https://lists.wikimedia.org/mailman/subscribe/mediawiki-announce';
 283
 284         /**
 285          * Supported language codes for Mailman
 286          */
 287         protected $mediaWikiAnnounceLanguages = array(
 288                 'ca', 'cs', 'da', 'de', 'en', 'es', 'et', 'eu', 'fi', 'fr', 'hr', 'hu',
 289                 'it', 'ja', 'ko', 'lt', 'nl', 'no', 'pl', 'pt', 'pt-br', 'ro', 'ru',
 290                 'sl', 'sr', 'sv', 'tr', 'uk'
 291         );
 292
 293         /**
 294          * UI interface for displaying a short message
 295          * The parameters are like parameters to wfMsg().
 296          * The messages will be in wikitext format, which will be converted to an
 297          * output format such as HTML or text before being sent to the user.
 298          */
 299         public abstract function showMessage( $msg /*, ... */ );
 300
 301         /**
 302          * Same as showMessage(), but for displaying errors
 303          */
 304         public abstract function showError( $msg /*, ... */ );
 305
 306         /**
 307          * Show a message to the installing user by using a Status object
 308          * @param $status Status
 309          */
 310         public abstract function showStatusMessage( Status $status );
 311
 312         /**
 313          * Constructor, always call this from child classes.
 314          */
 315         public function __construct() {
 316                 global $wgExtensionMessagesFiles, $wgUser;
 317
 318                 // Disable the i18n cache and LoadBalancer
 319                 Language::getLocalisationCache()->disableBackend();
 320                 LBFactory::disableBackend();
 321
 322                 // Load the installer's i18n file.
 323                 $wgExtensionMessagesFiles['MediawikiInstaller'] =
 324                         dirname( __FILE__ ) . '/Installer.i18n.php';
 325
 326                 // Having a user with id = 0 safeguards us from DB access via User::loadOptions().
 327                 $wgUser = User::newFromId( 0 );
 328
 329                 $this->settings = $this->internalDefaults;
 330
 331                 foreach ( $this->defaultVarNames as $var ) {
 332                         $this->settings[$var] = $GLOBALS[$var];
 333                 }
 334
 335                 foreach ( self::getDBTypes() as $type ) {
 336                         $installer = $this->getDBInstaller( $type );
 337
 338                         if ( !$installer->isCompiled() ) {
 339                                 continue;
 340                         }
 341
 342                         $defaults = $installer->getGlobalDefaults();
 343
 344                         foreach ( $installer->getGlobalNames() as $var ) {
 345                                 if ( isset( $defaults[$var] ) ) {
 346                                         $this->settings[$var] = $defaults[$var];
 347                                 } else {
 348                                         $this->settings[$var] = $GLOBALS[$var];
 349                                 }
 350                         }
 351                 }
 352
 353                 $this->parserTitle = Title::newFromText( 'Installer' );
 354                 $this->parserOptions = new ParserOptions; // language will  be wrong :(
 355                 $this->parserOptions->setEditSection( false );
 356         }
 357
 358         /**
 359          * Get a list of known DB types.
 360          *
 361          * @return array
 362          */
 363         public static function getDBTypes() {
 364                 return self::$dbTypes;
 365         }
 366
 367         /**
 368          * Do initial checks of the PHP environment. Set variables according to
 369          * the observed environment.
 370          *
 371          * It's possible that this may be called under the CLI SAPI, not the SAPI
 372          * that the wiki will primarily run under. In that case, the subclass should
 373          * initialise variables such as wgScriptPath, before calling this function.
 374          *
 375          * Under the web subclass, it can already be assumed that PHP 5+ is in use
 376          * and that sessions are working.
 377          *
 378          * @return Status
 379          */
 380         public function doEnvironmentChecks() {
 381                 $phpVersion = phpversion();
 382                 if( version_compare( $phpVersion, self::MINIMUM_PHP_VERSION, '>=' ) ) {
 383                         $this->showMessage( 'config-env-php', $phpVersion );
 384                         $good = true;
 385                 } else {
 386                         $this->showMessage( 'config-env-php-toolow', $phpVersion, self::MINIMUM_PHP_VERSION );
 387                         $good = false;
 388                 }
 389
 390                 if( $good ) {
 391                         foreach ( $this->envChecks as $check ) {
 392                                 $status = $this->$check();
 393                                 if ( $status === false ) {
 394                                         $good = false;
 395                                 }
 396                         }
 397                 }
 398
 399                 $this->setVar( '_Environment', $good );
 400
 401                 return $good ? Status::newGood() : Status::newFatal( 'config-env-bad' );
 402         }
 403
 404         /**
 405          * Set a MW configuration variable, or internal installer configuration variable.
 406          *
 407          * @param $name String
 408          * @param $value Mixed
 409          */
 410         public function setVar( $name, $value ) {
 411                 $this->settings[$name] = $value;
 412         }
 413
 414         /**
 415          * Get an MW configuration variable, or internal installer configuration variable.
 416          * The defaults come from $GLOBALS (ultimately DefaultSettings.php).
 417          * Installer variables are typically prefixed by an underscore.
 418          *
 419          * @param $name String
 420          * @param $default Mixed
 421          *
 422          * @return mixed
 423          */
 424         public function getVar( $name, $default = null ) {
 425                 if ( !isset( $this->settings[$name] ) ) {
 426                         return $default;
 427                 } else {
 428                         return $this->settings[$name];
 429                 }
 430         }
 431
 432         /**
 433          * Get an instance of DatabaseInstaller for the specified DB type.
 434          *
 435          * @param $type Mixed: DB installer for which is needed, false to use default.
 436          *
 437          * @return DatabaseInstaller
 438          */
 439         public function getDBInstaller( $type = false ) {
 440                 if ( !$type ) {
 441                         $type = $this->getVar( 'wgDBtype' );
 442                 }
 443
 444                 $type = strtolower( $type );
 445
 446                 if ( !isset( $this->dbInstallers[$type] ) ) {
 447                         $class = ucfirst( $type ). 'Installer';
 448                         $this->dbInstallers[$type] = new $class( $this );
 449                 }
 450
 451                 return $this->dbInstallers[$type];
 452         }
 453
 454         /**
 455          * Determine if LocalSettings.php exists. If it does, return its variables,
 456          * merged with those from AdminSettings.php, as an array.
 457          *
 458          * @return Array
 459          */
 460         public static function getExistingLocalSettings() {
 461                 global $IP;
 462
 463                 wfSuppressWarnings();
 464                 $_lsExists = file_exists( "$IP/LocalSettings.php" );
 465                 wfRestoreWarnings();
 466
 467                 if( !$_lsExists ) {
 468                         return false;
 469                 }
 470                 unset($_lsExists);
 471
 472                 require( "$IP/includes/DefaultSettings.php" );
 473                 require( "$IP/LocalSettings.php" );
 474                 if ( file_exists( "$IP/AdminSettings.php" ) ) {
 475                         require( "$IP/AdminSettings.php" );
 476                 }
 477                 return get_defined_vars();
 478         }
 479
 480         /**
 481          * Get a fake password for sending back to the user in HTML.
 482          * This is a security mechanism to avoid compromise of the password in the
 483          * event of session ID compromise.
 484          *
 485          * @param $realPassword String
 486          *
 487          * @return string
 488          */
 489         public function getFakePassword( $realPassword ) {
 490                 return str_repeat( '*', strlen( $realPassword ) );
 491         }
 492
 493         /**
 494          * Set a variable which stores a password, except if the new value is a
 495          * fake password in which case leave it as it is.
 496          *
 497          * @param $name String
 498          * @param $value Mixed
 499          */
 500         public function setPassword( $name, $value ) {
 501                 if ( !preg_match( '/^\*+$/', $value ) ) {
 502                         $this->setVar( $name, $value );
 503                 }
 504         }
 505
 506         /**
 507          * On POSIX systems return the primary group of the webserver we're running under.
 508          * On other systems just returns null.
 509          *
 510          * This is used to advice the user that he should chgrp his mw-config/data/images directory as the
 511          * webserver user before he can install.
 512          *
 513          * Public because SqliteInstaller needs it, and doesn't subclass Installer.
 514          *
 515          * @return mixed
 516          */
 517         public static function maybeGetWebserverPrimaryGroup() {
 518                 if ( !function_exists( 'posix_getegid' ) || !function_exists( 'posix_getpwuid' ) ) {
 519                         # I don't know this, this isn't UNIX.
 520                         return null;
 521                 }
 522
 523                 # posix_getegid() *not* getmygid() because we want the group of the webserver,
 524                 # not whoever owns the current script.
 525                 $gid = posix_getegid();
 526                 $getpwuid = posix_getpwuid( $gid );
 527                 $group = $getpwuid['name'];
 528
 529                 return $group;
 530         }
 531
 532         /**
 533          * Convert wikitext $text to HTML.
 534          *
 535          * This is potentially error prone since many parser features require a complete
 536          * installed MW database. The solution is to just not use those features when you
 537          * write your messages. This appears to work well enough. Basic formatting and
 538          * external links work just fine.
 539          *
 540          * But in case a translator decides to throw in a #ifexist or internal link or
 541          * whatever, this function is guarded to catch the attempted DB access and to present
 542          * some fallback text.
 543          *
 544          * @param $text String
 545          * @param $lineStart Boolean
 546          * @return String
 547          */
 548         public function parse( $text, $lineStart = false ) {
 549                 global $wgParser;
 550
 551                 try {
 552                         $out = $wgParser->parse( $text, $this->parserTitle, $this->parserOptions, $lineStart );
 553                         $html = $out->getText();
 554                 } catch ( DBAccessError $e ) {
 555                         $html = '<!--DB access attempted during parse-->  ' . htmlspecialchars( $text );
 556
 557                         if ( !empty( $this->debug ) ) {
 558                                 $html .= "<!--\n" . $e->getTraceAsString() . "\n-->";
 559                         }
 560                 }
 561
 562                 return $html;
 563         }
 564
 565         /**
 566          * @return ParserOptions
 567          */
 568         public function getParserOptions() {
 569                 return $this->parserOptions;
 570         }
 571
 572         public function disableLinkPopups() {
 573                 $this->parserOptions->setExternalLinkTarget( false );
 574         }
 575
 576         public function restoreLinkPopups() {
 577                 global $wgExternalLinkTarget;
 578                 $this->parserOptions->setExternalLinkTarget( $wgExternalLinkTarget );
 579         }
 580
 581         /**
 582          * Install step which adds a row to the site_stats table with appropriate
 583          * initial values.
 584          *
 585          * @param $installer DatabaseInstaller
 586          *
 587          * @return Status
 588          */
 589         public function populateSiteStats( DatabaseInstaller $installer ) {
 590                 $status = $installer->getConnection();
 591                 if ( !$status->isOK() ) {
 592                         return $status;
 593                 }
 594                 $status->value->insert( 'site_stats', array(
 595                         'ss_row_id' => 1,
 596                         'ss_total_views' => 0,
 597                         'ss_total_edits' => 0,
 598                         'ss_good_articles' => 0,
 599                         'ss_total_pages' => 0,
 600                         'ss_users' => 0,
 601                         'ss_admins' => 0,
 602                         'ss_images' => 0 ),
 603                         __METHOD__, 'IGNORE' );
 604                 return Status::newGood();
 605         }
 606
 607         /**
 608          * Exports all wg* variables stored by the installer into global scope.
 609          */
 610         public function exportVars() {
 611                 foreach ( $this->settings as $name => $value ) {
 612                         if ( substr( $name, 0, 2 ) == 'wg' ) {
 613                                 $GLOBALS[$name] = $value;
 614                         }
 615                 }
 616         }
 617
 618         /**
 619          * Environment check for DB types.
 620          */
 621         protected function envCheckDB() {
 622                 global $wgLang;
 623
 624                 $compiledDBs = array();
 625                 $allNames = array();
 626
 627                 foreach ( self::getDBTypes() as $name ) {
 628                         if ( $this->getDBInstaller( $name )->isCompiled() ) {
 629                                 $compiledDBs[] = $name;
 630                         }
 631                         $allNames[] = wfMsg( 'config-type-' . $name );
 632                 }
 633
 634                 $this->setVar( '_CompiledDBs', $compiledDBs );
 635
 636                 if ( !$compiledDBs ) {
 637                         $this->showError( 'config-no-db', $wgLang->commaList( $allNames ) );
 638                         // @todo FIXME: This only works for the web installer!
 639                         return false;
 640                 }
 641
 642                 // Check for FTS3 full-text search module
 643                 $sqlite = $this->getDBInstaller( 'sqlite' );
 644                 if ( $sqlite->isCompiled() ) {
 645                         if( DatabaseSqlite::getFulltextSearchModule() != 'FTS3' ) {
 646                                 $this->showMessage( 'config-no-fts3' );
 647                         }
 648                 }
 649         }
 650
 651         /**
 652          * Environment check for register_globals.
 653          */
 654         protected function envCheckRegisterGlobals() {
 655                 if( wfIniGetBool( "magic_quotes_runtime" ) ) {
 656                         $this->showMessage( 'config-register-globals' );
 657                 }
 658         }
 659
 660         /**
 661          * Some versions of libxml+PHP break < and > encoding horribly
 662          */
 663         protected function envCheckBrokenXML() {
 664                 $test = new PhpXmlBugTester();
 665                 if ( !$test->ok ) {
 666                         $this->showError( 'config-brokenlibxml' );
 667                         return false;
 668                 }
 669         }
 670
 671         /**
 672          * Test PHP (probably 5.3.1, but it could regress again) to make sure that
 673          * reference parameters to __call() are not converted to null
 674          */
 675         protected function envCheckPHP531() {
 676                 $test = new PhpRefCallBugTester;
 677                 $test->execute();
 678                 if ( !$test->ok ) {
 679                         $this->showError( 'config-using531', phpversion() );
 680                         return false;
 681                 }
 682         }
 683
 684         /**
 685          * Environment check for magic_quotes_runtime.
 686          */
 687         protected function envCheckMagicQuotes() {
 688                 if( wfIniGetBool( "magic_quotes_runtime" ) ) {
 689                         $this->showError( 'config-magic-quotes-runtime' );
 690                         return false;
 691                 }
 692         }
 693
 694         /**
 695          * Environment check for magic_quotes_sybase.
 696          */
 697         protected function envCheckMagicSybase() {
 698                 if ( wfIniGetBool( 'magic_quotes_sybase' ) ) {
 699                         $this->showError( 'config-magic-quotes-sybase' );
 700                         return false;
 701                 }
 702         }
 703
 704         /**
 705          * Environment check for mbstring.func_overload.
 706          */
 707         protected function envCheckMbstring() {
 708                 if ( wfIniGetBool( 'mbstring.func_overload' ) ) {
 709                         $this->showError( 'config-mbstring' );
 710                         return false;
 711                 }
 712         }
 713
 714         /**
 715          * Environment check for zend.ze1_compatibility_mode.
 716          */
 717         protected function envCheckZE1() {
 718                 if ( wfIniGetBool( 'zend.ze1_compatibility_mode' ) ) {
 719                         $this->showError( 'config-ze1' );
 720                         return false;
 721                 }
 722         }
 723
 724         /**
 725          * Environment check for safe_mode.
 726          */
 727         protected function envCheckSafeMode() {
 728                 if ( wfIniGetBool( 'safe_mode' ) ) {
 729                         $this->setVar( '_SafeMode', true );
 730                         $this->showMessage( 'config-safe-mode' );
 731                 }
 732         }
 733
 734         /**
 735          * Environment check for the XML module.
 736          */
 737         protected function envCheckXML() {
 738                 if ( !function_exists( "utf8_encode" ) ) {
 739                         $this->showError( 'config-xml-bad' );
 740                         return false;
 741                 }
 742         }
 743
 744         /**
 745          * Environment check for the PCRE module.
 746          */
 747         protected function envCheckPCRE() {
 748                 if ( !function_exists( 'preg_match' ) ) {
 749                         $this->showError( 'config-pcre' );
 750                         return false;
 751                 }
 752                 wfSuppressWarnings();
 753                 $regexd = preg_replace( '/[\x{0430}-\x{04FF}]/iu', '', '-АБВГД-' );
 754                 wfRestoreWarnings();
 755                 if ( $regexd != '--' ) {
 756                         $this->showError( 'config-pcre-no-utf8' );
 757                         return false;
 758                 }
 759         }
 760
 761         /**
 762          * Environment check for available memory.
 763          */
 764         protected function envCheckMemory() {
 765                 $limit = ini_get( 'memory_limit' );
 766
 767                 if ( !$limit || $limit == -1 ) {
 768                         return true;
 769                 }
 770
 771                 $n = wfShorthandToInteger( $limit );
 772
 773                 if( $n < $this->minMemorySize * 1024 * 1024 ) {
 774                         $newLimit = "{$this->minMemorySize}M";
 775
 776                         if( ini_set( "memory_limit", $newLimit ) === false ) {
 777                                 $this->showMessage( 'config-memory-bad', $limit );
 778                         } else {
 779                                 $this->showMessage( 'config-memory-raised', $limit, $newLimit );
 780                                 $this->setVar( '_RaiseMemory', true );
 781                         }
 782                 } else {
 783                         return true;
 784                 }
 785         }
 786
 787         /**
 788          * Environment check for compiled object cache types.
 789          */
 790         protected function envCheckCache() {
 791                 $caches = array();
 792                 foreach ( $this->objectCaches as $name => $function ) {
 793                         if ( function_exists( $function ) ) {
 794                                 $caches[$name] = true;
 795                         }
 796                 }
 797
 798                 if ( !$caches ) {
 799                         $this->showMessage( 'config-no-cache' );
 800                 }
 801
 802                 $this->setVar( '_Caches', $caches );
 803         }
 804
 805         /**
 806          * Search for GNU diff3.
 807          */
 808         protected function envCheckDiff3() {
 809                 $names = array( "gdiff3", "diff3", "diff3.exe" );
 810                 $versionInfo = array( '$1 --version 2>&1', 'GNU diffutils' );
 811
 812                 $diff3 = self::locateExecutableInDefaultPaths( $names, $versionInfo );
 813
 814                 if ( $diff3 ) {
 815                         $this->setVar( 'wgDiff3', $diff3 );
 816                 } else {
 817                         $this->setVar( 'wgDiff3', false );
 818                         $this->showMessage( 'config-diff3-bad' );
 819                 }
 820         }
 821
 822         /**
 823          * Environment check for ImageMagick and GD.
 824          */
 825         protected function envCheckGraphics() {
 826                 $names = array( wfIsWindows() ? 'convert.exe' : 'convert' );
 827                 $convert = self::locateExecutableInDefaultPaths( $names, array( '$1 -version', 'ImageMagick' ) );
 828
 829                 $this->setVar( 'wgImageMagickConvertCommand', '' );
 830                 if ( $convert ) {
 831                         $this->setVar( 'wgImageMagickConvertCommand', $convert );
 832                         $this->showMessage( 'config-imagemagick', $convert );
 833                         return true;
 834                 } elseif ( function_exists( 'imagejpeg' ) ) {
 835                         $this->showMessage( 'config-gd' );
 836                         return true;
 837                 } else {
 838                         $this->showMessage( 'config-no-scaling' );
 839                 }
 840         }
 841
 842         /**
 843          * Environment check for the server hostname.
 844          */
 845         protected function envCheckServer() {
 846                 $server = WebRequest::detectServer();
 847                 $this->showMessage( 'config-using-server', $server );
 848                 $this->setVar( 'wgServer', $server );
 849         }
 850
 851         /**
 852          * Environment check for setting $IP and $wgScriptPath.
 853          */
 854         protected function envCheckPath() {
 855                 global $IP;
 856                 $IP = dirname( dirname( dirname( __FILE__ ) ) );
 857
 858                 $this->setVar( 'IP', $IP );
 859
 860                 // PHP_SELF isn't available sometimes, such as when PHP is CGI but
 861                 // cgi.fix_pathinfo is disabled. In that case, fall back to SCRIPT_NAME
 862                 // to get the path to the current script... hopefully it's reliable. SIGH
 863                 if ( !empty( $_SERVER['PHP_SELF'] ) ) {
 864                         $path = $_SERVER['PHP_SELF'];
 865                 } elseif ( !empty( $_SERVER['SCRIPT_NAME'] ) ) {
 866                         $path = $_SERVER['SCRIPT_NAME'];
 867                 } elseif ( $this->getVar( 'wgScriptPath' ) ) {
 868                         // Some kind soul has set it for us already (e.g. debconf)
 869                         return true;
 870                 } else {
 871                         $this->showError( 'config-no-uri' );
 872                         return false;
 873                 }
 874
 875                 $uri = preg_replace( '{^(.*)/(mw-)?config.*$}', '$1', $path );
 876                 $this->setVar( 'wgScriptPath', $uri );
 877         }
 878
 879         /**
 880          * Environment check for setting the preferred PHP file extension.
 881          */
 882         protected function envCheckExtension() {
 883                 // @todo FIXME: Detect this properly
 884                 if ( defined( 'MW_INSTALL_PHP5_EXT' ) ) {
 885                         $ext = 'php5';
 886                 } else {
 887                         $ext = 'php';
 888                 }
 889                 $this->setVar( 'wgScriptExtension', ".$ext" );
 890         }
 891
 892         /**
 893          * TODO: document
 894          */
 895         protected function envCheckShellLocale() {
 896                 $os = php_uname( 's' );
 897                 $supported = array( 'Linux', 'SunOS', 'HP-UX', 'Darwin' ); # Tested these
 898
 899                 if ( !in_array( $os, $supported ) ) {
 900                         return true;
 901                 }
 902
 903                 # Get a list of available locales.
 904                 $ret = false;
 905                 $lines = wfShellExec( '/usr/bin/locale -a', $ret );
 906
 907                 if ( $ret ) {
 908                         return true;
 909                 }
 910
 911                 $lines = wfArrayMap( 'trim', explode( "\n", $lines ) );
 912                 $candidatesByLocale = array();
 913                 $candidatesByLang = array();
 914
 915                 foreach ( $lines as $line ) {
 916                         if ( $line === '' ) {
 917                                 continue;
 918                         }
 919
 920                         if ( !preg_match( '/^([a-zA-Z]+)(_[a-zA-Z]+|)\.(utf8|UTF-8)(@[a-zA-Z_]*|)$/i', $line, $m ) ) {
 921                                 continue;
 922                         }
 923
 924                         list( $all, $lang, $territory, $charset, $modifier ) = $m;
 925
 926                         $candidatesByLocale[$m[0]] = $m;
 927                         $candidatesByLang[$lang][] = $m;
 928                 }
 929
 930                 # Try the current value of LANG.
 931                 if ( isset( $candidatesByLocale[ getenv( 'LANG' ) ] ) ) {
 932                         $this->setVar( 'wgShellLocale', getenv( 'LANG' ) );
 933                         return true;
 934                 }
 935
 936                 # Try the most common ones.
 937                 $commonLocales = array( 'en_US.UTF-8', 'en_US.utf8', 'de_DE.UTF-8', 'de_DE.utf8' );
 938                 foreach ( $commonLocales as $commonLocale ) {
 939                         if ( isset( $candidatesByLocale[$commonLocale] ) ) {
 940                                 $this->setVar( 'wgShellLocale', $commonLocale );
 941                                 return true;
 942                         }
 943                 }
 944
 945                 # Is there an available locale in the Wiki's language?
 946                 $wikiLang = $this->getVar( 'wgLanguageCode' );
 947
 948                 if ( isset( $candidatesByLang[$wikiLang] ) ) {
 949                         $m = reset( $candidatesByLang[$wikiLang] );
 950                         $this->setVar( 'wgShellLocale', $m[0] );
 951                         return true;
 952                 }
 953
 954                 # Are there any at all?
 955                 if ( count( $candidatesByLocale ) ) {
 956                         $m = reset( $candidatesByLocale );
 957                         $this->setVar( 'wgShellLocale', $m[0] );
 958                         return true;
 959                 }
 960
 961                 # Give up.
 962                 return true;
 963         }
 964
 965         /**
 966          * TODO: document
 967          */
 968         protected function envCheckUploadsDirectory() {
 969                 global $IP;
 970
 971                 $dir = $IP . '/images/';
 972                 $url = $this->getVar( 'wgServer' ) . $this->getVar( 'wgScriptPath' ) . '/images/';
 973                 $safe = !$this->dirIsExecutable( $dir, $url );
 974
 975                 if ( $safe ) {
 976                         return true;
 977                 } else {
 978                         $this->showMessage( 'config-uploads-not-safe', $dir );
 979                 }
 980         }
 981
 982         /**
 983          * Checks if suhosin.get.max_value_length is set, and if so, sets
 984          * $wgResourceLoaderMaxQueryLength to that value in the generated
 985          * LocalSettings file
 986          */
 987         protected function envCheckSuhosinMaxValueLength() {
 988                 $maxValueLength = ini_get( 'suhosin.get.max_value_length' );
 989                 if ( $maxValueLength > 0 ) {
 990                         $this->showMessage( 'config-suhosin-max-value-length', $maxValueLength );
 991                 } else {
 992                         $maxValueLength = -1;
 993                 }
 994                 $this->setVar( 'wgResourceLoaderMaxQueryLength', $maxValueLength );
 995         }
 996
 997         /**
 998          * Convert a hex string representing a Unicode code point to that code point.
 999          * @param $c String
1000          * @return string
1001          */
1002         protected function unicodeChar( $c ) {
1003                 $c = hexdec($c);
1004                 if ($c <= 0x7F) {
1005                         return chr($c);
1006                 } elseif ($c <= 0x7FF) {
1007                         return chr(0xC0 | $c >> 6) . chr(0x80 | $c & 0x3F);
1008                 } elseif ($c <= 0xFFFF) {
1009                         return chr(0xE0 | $c >> 12) . chr(0x80 | $c >> 6 & 0x3F)
1010                                 . chr(0x80 | $c & 0x3F);
1011                 } elseif ($c <= 0x10FFFF) {
1012                         return chr(0xF0 | $c >> 18) . chr(0x80 | $c >> 12 & 0x3F)
1013                                 . chr(0x80 | $c >> 6 & 0x3F)
1014                                 . chr(0x80 | $c & 0x3F);
1015                 } else {
1016                         return false;
1017                 }
1018         }
1019
1020
1021         /**
1022          * Check the libicu version
1023          */
1024         protected function envCheckLibicu() {
1025                 $utf8 = function_exists( 'utf8_normalize' );
1026                 $intl = function_exists( 'normalizer_normalize' );
1027
1028                 /**
1029                  * This needs to be updated something that the latest libicu
1030                  * will properly normalize.  This normalization was found at
1031                  * http://www.unicode.org/versions/Unicode5.2.0/#Character_Additions
1032                  * Note that we use the hex representation to create the code
1033                  * points in order to avoid any Unicode-destroying during transit.
1034                  */
1035                 $not_normal_c = $this->unicodeChar("FA6C");
1036                 $normal_c = $this->unicodeChar("242EE");
1037
1038                 $useNormalizer = 'php';
1039                 $needsUpdate = false;
1040
1041                 /**
1042                  * We're going to prefer the pecl extension here unless
1043                  * utf8_normalize is more up to date.
1044                  */
1045                 if( $utf8 ) {
1046                         $useNormalizer = 'utf8';
1047                         $utf8 = utf8_normalize( $not_normal_c, UNORM_NFC );
1048                         if ( $utf8 !== $normal_c ) $needsUpdate = true;
1049                 }
1050                 if( $intl ) {
1051                         $useNormalizer = 'intl';
1052                         $intl = normalizer_normalize( $not_normal_c, Normalizer::FORM_C );
1053                         if ( $intl !== $normal_c ) $needsUpdate = true;
1054                 }
1055
1056                 // Uses messages 'config-unicode-using-php', 'config-unicode-using-utf8', 'config-unicode-using-intl'
1057                 if( $useNormalizer === 'php' ) {
1058                         $this->showMessage( 'config-unicode-pure-php-warning' );
1059                 } else {
1060                         $this->showMessage( 'config-unicode-using-' . $useNormalizer );
1061                         if( $needsUpdate ) {
1062                                 $this->showMessage( 'config-unicode-update-warning' );
1063                         }
1064                 }
1065         }
1066
1067         /**
1068          * Get an array of likely places we can find executables. Check a bunch
1069          * of known Unix-like defaults, as well as the PATH environment variable
1070          * (which should maybe make it work for Windows?)
1071          *
1072          * @return Array
1073          */
1074         protected static function getPossibleBinPaths() {
1075                 return array_merge(
1076                         array( '/usr/bin', '/usr/local/bin', '/opt/csw/bin',
1077                                 '/usr/gnu/bin', '/usr/sfw/bin', '/sw/bin', '/opt/local/bin' ),
1078                         explode( PATH_SEPARATOR, getenv( 'PATH' ) )
1079                 );
1080         }
1081
1082         /**
1083          * Search a path for any of the given executable names. Returns the
1084          * executable name if found. Also checks the version string returned
1085          * by each executable.
1086          *
1087          * Used only by environment checks.
1088          *
1089          * @param $path String: path to search
1090          * @param $names Array of executable names
1091          * @param $versionInfo Boolean false or array with two members:
1092          *               0 => Command to run for version check, with $1 for the full executable name
1093          *               1 => String to compare the output with
1094          *
1095          * If $versionInfo is not false, only executables with a version
1096          * matching $versionInfo[1] will be returned.
1097          */
1098         public static function locateExecutable( $path, $names, $versionInfo = false ) {
1099                 if ( !is_array( $names ) ) {
1100                         $names = array( $names );
1101                 }
1102
1103                 foreach ( $names as $name ) {
1104                         $command = $path . DIRECTORY_SEPARATOR . $name;
1105
1106                         wfSuppressWarnings();
1107                         $file_exists = file_exists( $command );
1108                         wfRestoreWarnings();
1109
1110                         if ( $file_exists ) {
1111                                 if ( !$versionInfo ) {
1112                                         return $command;
1113                                 }
1114
1115                                 $file = str_replace( '$1', wfEscapeShellArg( $command ), $versionInfo[0] );
1116                                 if ( strstr( wfShellExec( $file ), $versionInfo[1] ) !== false ) {
1117                                         return $command;
1118                                 }
1119                         }
1120                 }
1121                 return false;
1122         }
1123
1124         /**
1125          * Same as locateExecutable(), but checks in getPossibleBinPaths() by default
1126          * @see locateExecutable()
1127          */
1128         public static function locateExecutableInDefaultPaths( $names, $versionInfo = false ) {
1129                 foreach( self::getPossibleBinPaths() as $path ) {
1130                         $exe = self::locateExecutable( $path, $names, $versionInfo );
1131                         if( $exe !== false ) {
1132                                 return $exe;
1133                         }
1134                 }
1135                 return false;
1136         }
1137
1138         /**
1139          * Checks if scripts located in the given directory can be executed via the given URL.
1140          *
1141          * Used only by environment checks.
1142          */
1143         public function dirIsExecutable( $dir, $url ) {
1144                 $scriptTypes = array(
1145                         'php' => array(
1146                                 "<?php echo 'ex' . 'ec';",
1147                                 "#!/var/env php5\n<?php echo 'ex' . 'ec';",
1148                         ),
1149                 );
1150
1151                 // it would be good to check other popular languages here, but it'll be slow.
1152
1153                 wfSuppressWarnings();
1154
1155                 foreach ( $scriptTypes as $ext => $contents ) {
1156                         foreach ( $contents as $source ) {
1157                                 $file = 'exectest.' . $ext;
1158
1159                                 if ( !file_put_contents( $dir . $file, $source ) ) {
1160                                         break;
1161                                 }
1162
1163                                 try {
1164                                         $text = Http::get( $url . $file, array( 'timeout' => 3 ) );
1165                                 }
1166                                 catch( MWException $e ) {
1167                                         // Http::get throws with allow_url_fopen = false and no curl extension.
1168                                         $text = null;
1169                                 }
1170                                 unlink( $dir . $file );
1171
1172                                 if ( $text == 'exec' ) {
1173                                         wfRestoreWarnings();
1174                                         return $ext;
1175                                 }
1176                         }
1177                 }
1178
1179                 wfRestoreWarnings();
1180
1181                 return false;
1182         }
1183
1184         /**
1185          * ParserOptions are constructed before we determined the language, so fix it
1186          *
1187          * @param $lang Language
1188          */
1189         public function setParserLanguage( $lang ) {
1190                 $this->parserOptions->setTargetLanguage( $lang );
1191                 $this->parserOptions->setUserLang( $lang->getCode() );
1192         }
1193
1194         /**
1195          * Overridden by WebInstaller to provide lastPage parameters.
1196          */
1197         protected function getDocUrl( $page ) {
1198                 return "{$_SERVER['PHP_SELF']}?page=" . urlencode( $page );
1199         }
1200
1201         /**
1202          * Finds extensions that follow the format /extensions/Name/Name.php,
1203          * and returns an array containing the value for 'Name' for each found extension.
1204          *
1205          * @return array
1206          */
1207         public function findExtensions() {
1208                 if( $this->getVar( 'IP' ) === null ) {
1209                         return false;
1210                 }
1211
1212                 $exts = array();
1213                 $extDir = $this->getVar( 'IP' ) . '/extensions';
1214                 $dh = opendir( $extDir );
1215
1216                 while ( ( $file = readdir( $dh ) ) !== false ) {
1217                         if( !is_dir( "$extDir/$file" ) ) {
1218                                 continue;
1219                         }
1220                         if( file_exists( "$extDir/$file/$file.php" ) ) {
1221                                 $exts[] = $file;
1222                         }
1223                 }
1224
1225                 return $exts;
1226         }
1227
1228         /**
1229          * Installs the auto-detected extensions.
1230          *
1231          * @return Status
1232          */
1233         protected function includeExtensions() {
1234                 global $IP;
1235                 $exts = $this->getVar( '_Extensions' );
1236                 $IP = $this->getVar( 'IP' );
1237
1238                 /**
1239                  * We need to include DefaultSettings before including extensions to avoid
1240                  * warnings about unset variables. However, the only thing we really
1241                  * want here is $wgHooks['LoadExtensionSchemaUpdates']. This won't work
1242                  * if the extension has hidden hook registration in $wgExtensionFunctions,
1243                  * but we're not opening that can of worms
1244                  * @see https://bugzilla.wikimedia.org/show_bug.cgi?id=26857
1245                  */
1246                 global $wgAutoloadClasses;
1247                 $wgAutoloadClasses = array();
1248
1249                 require( "$IP/includes/DefaultSettings.php" );
1250
1251                 foreach( $exts as $e ) {
1252                         require_once( "$IP/extensions/$e/$e.php" );
1253                 }
1254
1255                 $hooksWeWant = isset( $wgHooks['LoadExtensionSchemaUpdates'] ) ?
1256                         $wgHooks['LoadExtensionSchemaUpdates'] : array();
1257
1258                 // Unset everyone else's hooks. Lord knows what someone might be doing
1259                 // in ParserFirstCallInit (see bug 27171)
1260                 $GLOBALS['wgHooks'] = array( 'LoadExtensionSchemaUpdates' => $hooksWeWant );
1261
1262                 return Status::newGood();
1263         }
1264
1265         /**
1266          * Get an array of install steps. Should always be in the format of
1267          * array(
1268          *   'name'     => 'someuniquename',
1269          *   'callback' => array( $obj, 'method' ),
1270          * )
1271          * There must be a config-install-$name message defined per step, which will
1272          * be shown on install.
1273          *
1274          * @param $installer DatabaseInstaller so we can make callbacks
1275          * @return array
1276          */
1277         protected function getInstallSteps( DatabaseInstaller $installer ) {
1278                 $coreInstallSteps = array(
1279                         array( 'name' => 'database',   'callback' => array( $installer, 'setupDatabase' ) ),
1280                         array( 'name' => 'tables',     'callback' => array( $installer, 'createTables' ) ),
1281                         array( 'name' => 'interwiki',  'callback' => array( $installer, 'populateInterwikiTable' ) ),
1282                         array( 'name' => 'stats',      'callback' => array( $this, 'populateSiteStats' ) ),
1283                         array( 'name' => 'keys',       'callback' => array( $this, 'generateKeys' ) ),
1284                         array( 'name' => 'sysop',      'callback' => array( $this, 'createSysop' ) ),
1285                         array( 'name' => 'mainpage',   'callback' => array( $this, 'createMainpage' ) ),
1286                 );
1287
1288                 // Build the array of install steps starting from the core install list,
1289                 // then adding any callbacks that wanted to attach after a given step
1290                 foreach( $coreInstallSteps as $step ) {
1291                         $this->installSteps[] = $step;
1292                         if( isset( $this->extraInstallSteps[ $step['name'] ] ) ) {
1293                                 $this->installSteps = array_merge(
1294                                         $this->installSteps,
1295                                         $this->extraInstallSteps[ $step['name'] ]
1296                                 );
1297                         }
1298                 }
1299
1300                 // Prepend any steps that want to be at the beginning
1301                 if( isset( $this->extraInstallSteps['BEGINNING'] ) ) {
1302                         $this->installSteps = array_merge(
1303                                 $this->extraInstallSteps['BEGINNING'],
1304                                 $this->installSteps
1305                         );
1306                 }
1307
1308                 // Extensions should always go first, chance to tie into hooks and such
1309                 if( count( $this->getVar( '_Extensions' ) ) ) {
1310                         array_unshift( $this->installSteps,
1311                                 array( 'name' => 'extensions', 'callback' => array( $this, 'includeExtensions' ) )
1312                         );
1313                         $this->installSteps[] = array(
1314                                 'name' => 'extension-tables',
1315                                 'callback' => array( $installer, 'createExtensionTables' )
1316                         );
1317                 }
1318                 return $this->installSteps;
1319         }
1320
1321         /**
1322          * Actually perform the installation.
1323          *
1324          * @param $startCB Array A callback array for the beginning of each step
1325          * @param $endCB Array A callback array for the end of each step
1326          *
1327          * @return Array of Status objects
1328          */
1329         public function performInstallation( $startCB, $endCB ) {
1330                 $installResults = array();
1331                 $installer = $this->getDBInstaller();
1332                 $installer->preInstall();
1333                 $steps = $this->getInstallSteps( $installer );
1334                 foreach( $steps as $stepObj ) {
1335                         $name = $stepObj['name'];
1336                         call_user_func_array( $startCB, array( $name ) );
1337
1338                         // Perform the callback step
1339                         $status = call_user_func( $stepObj['callback'], $installer );
1340
1341                         // Output and save the results
1342                         call_user_func( $endCB, $name, $status );
1343                         $installResults[$name] = $status;
1344
1345                         // If we've hit some sort of fatal, we need to bail.
1346                         // Callback already had a chance to do output above.
1347                         if( !$status->isOk() ) {
1348                                 break;
1349                         }
1350                 }
1351                 if( $status->isOk() ) {
1352                         $this->setVar( '_InstallDone', true );
1353                 }
1354                 return $installResults;
1355         }
1356
1357         /**
1358          * Generate $wgSecretKey. Will warn if we had to use mt_rand() instead of
1359          * /dev/urandom
1360          *
1361          * @return Status
1362          */
1363         public function generateKeys() {
1364                 $keys = array( 'wgSecretKey' => 64 );
1365                 if ( strval( $this->getVar( 'wgUpgradeKey' ) ) === '' ) {
1366                         $keys['wgUpgradeKey'] = 16;
1367                 }
1368                 return $this->doGenerateKeys( $keys );
1369         }
1370
1371         /**
1372          * Generate a secret value for variables using either
1373          * /dev/urandom or mt_rand(). Produce a warning in the later case.
1374          *
1375          * @param $keys Array
1376          * @return Status
1377          */
1378         protected function doGenerateKeys( $keys ) {
1379                 $status = Status::newGood();
1380
1381                 wfSuppressWarnings();
1382                 $file = fopen( "/dev/urandom", "r" );
1383                 wfRestoreWarnings();
1384
1385                 foreach ( $keys as $name => $length ) {
1386                         if ( $file ) {
1387                                         $secretKey = bin2hex( fread( $file, $length / 2 ) );
1388                         } else {
1389                                 $secretKey = '';
1390
1391                                 for ( $i = 0; $i < $length / 8; $i++ ) {
1392                                         $secretKey .= dechex( mt_rand( 0, 0x7fffffff ) );
1393                                 }
1394                         }
1395
1396                         $this->setVar( $name, $secretKey );
1397                 }
1398
1399                 if ( $file ) {
1400                         fclose( $file );
1401                 } else {
1402                         $names = array_keys ( $keys );
1403                         $names = preg_replace( '/^(.*)$/', '\$$1', $names );
1404                         global $wgLang;
1405                         $status->warning( 'config-insecure-keys', $wgLang->listToText( $names ), count( $names ) );
1406                 }
1407
1408                 return $status;
1409         }
1410
1411         /**
1412          * Create the first user account, grant it sysop and bureaucrat rights
1413          *
1414          * @return Status
1415          */
1416         protected function createSysop() {
1417                 $name = $this->getVar( '_AdminName' );
1418                 $user = User::newFromName( $name );
1419
1420                 if ( !$user ) {
1421                         // We should've validated this earlier anyway!
1422                         return Status::newFatal( 'config-admin-error-user', $name );
1423                 }
1424
1425                 if ( $user->idForName() == 0 ) {
1426                         $user->addToDatabase();
1427
1428                         try {
1429                                 $user->setPassword( $this->getVar( '_AdminPassword' ) );
1430                         } catch( PasswordError $pwe ) {
1431                                 return Status::newFatal( 'config-admin-error-password', $name, $pwe->getMessage() );
1432                         }
1433
1434                         $user->addGroup( 'sysop' );
1435                         $user->addGroup( 'bureaucrat' );
1436                         if( $this->getVar( '_AdminEmail' ) ) {
1437                                 $user->setEmail( $this->getVar( '_AdminEmail' ) );
1438                         }
1439                         $user->saveSettings();
1440
1441                         // Update user count
1442                         $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
1443                         $ssUpdate->doUpdate();
1444                 }
1445                 $status = Status::newGood();
1446
1447                 if( $this->getVar( '_Subscribe' ) && $this->getVar( '_AdminEmail' ) ) {
1448                         $this->subscribeToMediaWikiAnnounce( $status );
1449                 }
1450
1451                 return $status;
1452         }
1453
1454         private function subscribeToMediaWikiAnnounce( Status $s ) {
1455                 $params = array(
1456                         'email'    => $this->getVar( '_AdminEmail' ),
1457                         'language' => 'en',
1458                         'digest'   => 0
1459                 );
1460
1461                 // Mailman doesn't support as many languages as we do, so check to make
1462                 // sure their selected language is available
1463                 $myLang = $this->getVar( '_UserLang' );
1464                 if( in_array( $myLang, $this->mediaWikiAnnounceLanguages ) ) {
1465                         $myLang = $myLang == 'pt-br' ? 'pt_BR' : $myLang; // rewrite to Mailman's pt_BR
1466                         $params['language'] = $myLang;
1467                 }
1468
1469                 if( MWHttpRequest::canMakeRequests() ) {
1470                         $res = MWHttpRequest::factory( $this->mediaWikiAnnounceUrl,
1471                                 array( 'method' => 'POST', 'postData' => $params ) )->execute();
1472                         if( !$res->isOK() ) {
1473                                 $s->warning( 'config-install-subscribe-fail', $res->getMessage() );
1474                         }
1475                 } else {
1476                         $s->warning( 'config-install-subscribe-notpossible' );
1477                 }
1478         }
1479
1480         /**
1481          * Insert Main Page with default content.
1482          *
1483          * @return Status
1484          */
1485         protected function createMainpage( DatabaseInstaller $installer ) {
1486                 $status = Status::newGood();
1487                 try {
1488                         $article = new Article( Title::newMainPage() );
1489                         $article->doEdit( wfMsgForContent( 'mainpagetext' ) . "\n\n" .
1490                                                                 wfMsgForContent( 'mainpagedocfooter' ),
1491                                                                 '',
1492                                                                 EDIT_NEW,
1493                                                                 false,
1494                                                                 User::newFromName( 'MediaWiki default' ) );
1495                 } catch (MWException $e) {
1496                         //using raw, because $wgShowExceptionDetails can not be set yet
1497                         $status->fatal( 'config-install-mainpage-failed', $e->getMessage() );
1498                 }
1499
1500                 return $status;
1501         }
1502
1503         /**
1504          * Override the necessary bits of the config to run an installation.
1505          */
1506         public static function overrideConfig() {
1507                 define( 'MW_NO_SESSION', 1 );
1508
1509                 // Don't access the database
1510                 $GLOBALS['wgUseDatabaseMessages'] = false;
1511                 // Debug-friendly
1512                 $GLOBALS['wgShowExceptionDetails'] = true;
1513                 // Don't break forms
1514                 $GLOBALS['wgExternalLinkTarget'] = '_blank';
1515
1516                 // Extended debugging
1517                 $GLOBALS['wgShowSQLErrors'] = true;
1518                 $GLOBALS['wgShowDBErrorBacktrace'] = true;
1519
1520                 // Allow multiple ob_flush() calls
1521                 $GLOBALS['wgDisableOutputCompression'] = true;
1522
1523                 // Use a sensible cookie prefix (not my_wiki)
1524                 $GLOBALS['wgCookiePrefix'] = 'mw_installer';
1525
1526                 // Some of the environment checks make shell requests, remove limits
1527                 $GLOBALS['wgMaxShellMemory'] = 0;
1528         }
1529
1530         /**
1531          * Add an installation step following the given step.
1532          *
1533          * @param $callback Array A valid installation callback array, in this form:
1534          *    array( 'name' => 'some-unique-name', 'callback' => array( $obj, 'function' ) );
1535          * @param $findStep String the step to find. Omit to put the step at the beginning
1536          */
1537         public function addInstallStep( $callback, $findStep = 'BEGINNING' ) {
1538                 $this->extraInstallSteps[$findStep][] = $callback;
1539         }
1540
1541         /**
1542          * Disable the time limit for execution.
1543          * Some long-running pages (Install, Upgrade) will want to do this
1544          */
1545         protected function disableTimeLimit() {
1546                 wfSuppressWarnings();
1547                 set_time_limit( 0 );
1548                 wfRestoreWarnings();
1549         }
1550 }