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 ( $this->getVar( 'wgScriptPath' ) ) {
 864                         // Some kind soul has set it for us already (e.g. debconf)
 865                         return true;
 866                 } elseif ( !empty( $_SERVER['PHP_SELF'] ) ) {
 867                         $path = $_SERVER['PHP_SELF'];
 868                 } elseif ( !empty( $_SERVER['SCRIPT_NAME'] ) ) {
 869                         $path = $_SERVER['SCRIPT_NAME'];
 870                         return true;
 871                 } else {
 872                         $this->showError( 'config-no-uri' );
 873                         return false;
 874                 }
 875
 876                 $uri = preg_replace( '{^(.*)/(mw-)?config.*$}', '$1', $path );
 877                 $this->setVar( 'wgScriptPath', $uri );
 878         }
 879
 880         /**
 881          * Environment check for setting the preferred PHP file extension.
 882          */
 883         protected function envCheckExtension() {
 884                 // @todo FIXME: Detect this properly
 885                 if ( defined( 'MW_INSTALL_PHP5_EXT' ) ) {
 886                         $ext = 'php5';
 887                 } else {
 888                         $ext = 'php';
 889                 }
 890                 $this->setVar( 'wgScriptExtension', ".$ext" );
 891         }
 892
 893         /**
 894          * TODO: document
 895          */
 896         protected function envCheckShellLocale() {
 897                 $os = php_uname( 's' );
 898                 $supported = array( 'Linux', 'SunOS', 'HP-UX', 'Darwin' ); # Tested these
 899
 900                 if ( !in_array( $os, $supported ) ) {
 901                         return true;
 902                 }
 903
 904                 # Get a list of available locales.
 905                 $ret = false;
 906                 $lines = wfShellExec( '/usr/bin/locale -a', $ret );
 907
 908                 if ( $ret ) {
 909                         return true;
 910                 }
 911
 912                 $lines = wfArrayMap( 'trim', explode( "\n", $lines ) );
 913                 $candidatesByLocale = array();
 914                 $candidatesByLang = array();
 915
 916                 foreach ( $lines as $line ) {
 917                         if ( $line === '' ) {
 918                                 continue;
 919                         }
 920
 921                         if ( !preg_match( '/^([a-zA-Z]+)(_[a-zA-Z]+|)\.(utf8|UTF-8)(@[a-zA-Z_]*|)$/i', $line, $m ) ) {
 922                                 continue;
 923                         }
 924
 925                         list( $all, $lang, $territory, $charset, $modifier ) = $m;
 926
 927                         $candidatesByLocale[$m[0]] = $m;
 928                         $candidatesByLang[$lang][] = $m;
 929                 }
 930
 931                 # Try the current value of LANG.
 932                 if ( isset( $candidatesByLocale[ getenv( 'LANG' ) ] ) ) {
 933                         $this->setVar( 'wgShellLocale', getenv( 'LANG' ) );
 934                         return true;
 935                 }
 936
 937                 # Try the most common ones.
 938                 $commonLocales = array( 'en_US.UTF-8', 'en_US.utf8', 'de_DE.UTF-8', 'de_DE.utf8' );
 939                 foreach ( $commonLocales as $commonLocale ) {
 940                         if ( isset( $candidatesByLocale[$commonLocale] ) ) {
 941                                 $this->setVar( 'wgShellLocale', $commonLocale );
 942                                 return true;
 943                         }
 944                 }
 945
 946                 # Is there an available locale in the Wiki's language?
 947                 $wikiLang = $this->getVar( 'wgLanguageCode' );
 948
 949                 if ( isset( $candidatesByLang[$wikiLang] ) ) {
 950                         $m = reset( $candidatesByLang[$wikiLang] );
 951                         $this->setVar( 'wgShellLocale', $m[0] );
 952                         return true;
 953                 }
 954
 955                 # Are there any at all?
 956                 if ( count( $candidatesByLocale ) ) {
 957                         $m = reset( $candidatesByLocale );
 958                         $this->setVar( 'wgShellLocale', $m[0] );
 959                         return true;
 960                 }
 961
 962                 # Give up.
 963                 return true;
 964         }
 965
 966         /**
 967          * TODO: document
 968          */
 969         protected function envCheckUploadsDirectory() {
 970                 global $IP;
 971
 972                 $dir = $IP . '/images/';
 973                 $url = $this->getVar( 'wgServer' ) . $this->getVar( 'wgScriptPath' ) . '/images/';
 974                 $safe = !$this->dirIsExecutable( $dir, $url );
 975
 976                 if ( $safe ) {
 977                         return true;
 978                 } else {
 979                         $this->showMessage( 'config-uploads-not-safe', $dir );
 980                 }
 981         }
 982
 983         /**
 984          * Checks if suhosin.get.max_value_length is set, and if so, sets
 985          * $wgResourceLoaderMaxQueryLength to that value in the generated
 986          * LocalSettings file
 987          */
 988         protected function envCheckSuhosinMaxValueLength() {
 989                 $maxValueLength = ini_get( 'suhosin.get.max_value_length' );
 990                 if ( $maxValueLength > 0 ) {
 991                         $this->showMessage( 'config-suhosin-max-value-length', $maxValueLength );
 992                 } else {
 993                         $maxValueLength = -1;
 994                 }
 995                 $this->setVar( 'wgResourceLoaderMaxQueryLength', $maxValueLength );
 996         }
 997
 998         /**
 999          * Convert a hex string representing a Unicode code point to that code point.
1000          * @param $c String
1001          * @return string
1002          */
1003         protected function unicodeChar( $c ) {
1004                 $c = hexdec($c);
1005                 if ($c <= 0x7F) {
1006                         return chr($c);
1007                 } elseif ($c <= 0x7FF) {
1008                         return chr(0xC0 | $c >> 6) . chr(0x80 | $c & 0x3F);
1009                 } elseif ($c <= 0xFFFF) {
1010                         return chr(0xE0 | $c >> 12) . chr(0x80 | $c >> 6 & 0x3F)
1011                                 . chr(0x80 | $c & 0x3F);
1012                 } elseif ($c <= 0x10FFFF) {
1013                         return chr(0xF0 | $c >> 18) . chr(0x80 | $c >> 12 & 0x3F)
1014                                 . chr(0x80 | $c >> 6 & 0x3F)
1015                                 . chr(0x80 | $c & 0x3F);
1016                 } else {
1017                         return false;
1018                 }
1019         }
1020
1021
1022         /**
1023          * Check the libicu version
1024          */
1025         protected function envCheckLibicu() {
1026                 $utf8 = function_exists( 'utf8_normalize' );
1027                 $intl = function_exists( 'normalizer_normalize' );
1028
1029                 /**
1030                  * This needs to be updated something that the latest libicu
1031                  * will properly normalize.  This normalization was found at
1032                  * http://www.unicode.org/versions/Unicode5.2.0/#Character_Additions
1033                  * Note that we use the hex representation to create the code
1034                  * points in order to avoid any Unicode-destroying during transit.
1035                  */
1036                 $not_normal_c = $this->unicodeChar("FA6C");
1037                 $normal_c = $this->unicodeChar("242EE");
1038
1039                 $useNormalizer = 'php';
1040                 $needsUpdate = false;
1041
1042                 /**
1043                  * We're going to prefer the pecl extension here unless
1044                  * utf8_normalize is more up to date.
1045                  */
1046                 if( $utf8 ) {
1047                         $useNormalizer = 'utf8';
1048                         $utf8 = utf8_normalize( $not_normal_c, UNORM_NFC );
1049                         if ( $utf8 !== $normal_c ) $needsUpdate = true;
1050                 }
1051                 if( $intl ) {
1052                         $useNormalizer = 'intl';
1053                         $intl = normalizer_normalize( $not_normal_c, Normalizer::FORM_C );
1054                         if ( $intl !== $normal_c ) $needsUpdate = true;
1055                 }
1056
1057                 // Uses messages 'config-unicode-using-php', 'config-unicode-using-utf8', 'config-unicode-using-intl'
1058                 if( $useNormalizer === 'php' ) {
1059                         $this->showMessage( 'config-unicode-pure-php-warning' );
1060                 } else {
1061                         $this->showMessage( 'config-unicode-using-' . $useNormalizer );
1062                         if( $needsUpdate ) {
1063                                 $this->showMessage( 'config-unicode-update-warning' );
1064                         }
1065                 }
1066         }
1067
1068         /**
1069          * Get an array of likely places we can find executables. Check a bunch
1070          * of known Unix-like defaults, as well as the PATH environment variable
1071          * (which should maybe make it work for Windows?)
1072          *
1073          * @return Array
1074          */
1075         protected static function getPossibleBinPaths() {
1076                 return array_merge(
1077                         array( '/usr/bin', '/usr/local/bin', '/opt/csw/bin',
1078                                 '/usr/gnu/bin', '/usr/sfw/bin', '/sw/bin', '/opt/local/bin' ),
1079                         explode( PATH_SEPARATOR, getenv( 'PATH' ) )
1080                 );
1081         }
1082
1083         /**
1084          * Search a path for any of the given executable names. Returns the
1085          * executable name if found. Also checks the version string returned
1086          * by each executable.
1087          *
1088          * Used only by environment checks.
1089          *
1090          * @param $path String: path to search
1091          * @param $names Array of executable names
1092          * @param $versionInfo Boolean false or array with two members:
1093          *               0 => Command to run for version check, with $1 for the full executable name
1094          *               1 => String to compare the output with
1095          *
1096          * If $versionInfo is not false, only executables with a version
1097          * matching $versionInfo[1] will be returned.
1098          */
1099         public static function locateExecutable( $path, $names, $versionInfo = false ) {
1100                 if ( !is_array( $names ) ) {
1101                         $names = array( $names );
1102                 }
1103
1104                 foreach ( $names as $name ) {
1105                         $command = $path . DIRECTORY_SEPARATOR . $name;
1106
1107                         wfSuppressWarnings();
1108                         $file_exists = file_exists( $command );
1109                         wfRestoreWarnings();
1110
1111                         if ( $file_exists ) {
1112                                 if ( !$versionInfo ) {
1113                                         return $command;
1114                                 }
1115
1116                                 $file = str_replace( '$1', wfEscapeShellArg( $command ), $versionInfo[0] );
1117                                 if ( strstr( wfShellExec( $file ), $versionInfo[1] ) !== false ) {
1118                                         return $command;
1119                                 }
1120                         }
1121                 }
1122                 return false;
1123         }
1124
1125         /**
1126          * Same as locateExecutable(), but checks in getPossibleBinPaths() by default
1127          * @see locateExecutable()
1128          */
1129         public static function locateExecutableInDefaultPaths( $names, $versionInfo = false ) {
1130                 foreach( self::getPossibleBinPaths() as $path ) {
1131                         $exe = self::locateExecutable( $path, $names, $versionInfo );
1132                         if( $exe !== false ) {
1133                                 return $exe;
1134                         }
1135                 }
1136                 return false;
1137         }
1138
1139         /**
1140          * Checks if scripts located in the given directory can be executed via the given URL.
1141          *
1142          * Used only by environment checks.
1143          */
1144         public function dirIsExecutable( $dir, $url ) {
1145                 $scriptTypes = array(
1146                         'php' => array(
1147                                 "<?php echo 'ex' . 'ec';",
1148                                 "#!/var/env php5\n<?php echo 'ex' . 'ec';",
1149                         ),
1150                 );
1151
1152                 // it would be good to check other popular languages here, but it'll be slow.
1153
1154                 wfSuppressWarnings();
1155
1156                 foreach ( $scriptTypes as $ext => $contents ) {
1157                         foreach ( $contents as $source ) {
1158                                 $file = 'exectest.' . $ext;
1159
1160                                 if ( !file_put_contents( $dir . $file, $source ) ) {
1161                                         break;
1162                                 }
1163
1164                                 try {
1165                                         $text = Http::get( $url . $file, array( 'timeout' => 3 ) );
1166                                 }
1167                                 catch( MWException $e ) {
1168                                         // Http::get throws with allow_url_fopen = false and no curl extension.
1169                                         $text = null;
1170                                 }
1171                                 unlink( $dir . $file );
1172
1173                                 if ( $text == 'exec' ) {
1174                                         wfRestoreWarnings();
1175                                         return $ext;
1176                                 }
1177                         }
1178                 }
1179
1180                 wfRestoreWarnings();
1181
1182                 return false;
1183         }
1184
1185         /**
1186          * ParserOptions are constructed before we determined the language, so fix it
1187          *
1188          * @param $lang Language
1189          */
1190         public function setParserLanguage( $lang ) {
1191                 $this->parserOptions->setTargetLanguage( $lang );
1192                 $this->parserOptions->setUserLang( $lang->getCode() );
1193         }
1194
1195         /**
1196          * Overridden by WebInstaller to provide lastPage parameters.
1197          */
1198         protected function getDocUrl( $page ) {
1199                 return "{$_SERVER['PHP_SELF']}?page=" . urlencode( $page );
1200         }
1201
1202         /**
1203          * Finds extensions that follow the format /extensions/Name/Name.php,
1204          * and returns an array containing the value for 'Name' for each found extension.
1205          *
1206          * @return array
1207          */
1208         public function findExtensions() {
1209                 if( $this->getVar( 'IP' ) === null ) {
1210                         return false;
1211                 }
1212
1213                 $exts = array();
1214                 $extDir = $this->getVar( 'IP' ) . '/extensions';
1215                 $dh = opendir( $extDir );
1216
1217                 while ( ( $file = readdir( $dh ) ) !== false ) {
1218                         if( !is_dir( "$extDir/$file" ) ) {
1219                                 continue;
1220                         }
1221                         if( file_exists( "$extDir/$file/$file.php" ) ) {
1222                                 $exts[] = $file;
1223                         }
1224                 }
1225
1226                 return $exts;
1227         }
1228
1229         /**
1230          * Installs the auto-detected extensions.
1231          *
1232          * @return Status
1233          */
1234         protected function includeExtensions() {
1235                 global $IP;
1236                 $exts = $this->getVar( '_Extensions' );
1237                 $IP = $this->getVar( 'IP' );
1238
1239                 /**
1240                  * We need to include DefaultSettings before including extensions to avoid
1241                  * warnings about unset variables. However, the only thing we really
1242                  * want here is $wgHooks['LoadExtensionSchemaUpdates']. This won't work
1243                  * if the extension has hidden hook registration in $wgExtensionFunctions,
1244                  * but we're not opening that can of worms
1245                  * @see https://bugzilla.wikimedia.org/show_bug.cgi?id=26857
1246                  */
1247                 global $wgAutoloadClasses;
1248                 $wgAutoloadClasses = array();
1249
1250                 require( "$IP/includes/DefaultSettings.php" );
1251
1252                 foreach( $exts as $e ) {
1253                         require_once( "$IP/extensions/$e/$e.php" );
1254                 }
1255
1256                 $hooksWeWant = isset( $wgHooks['LoadExtensionSchemaUpdates'] ) ?
1257                         $wgHooks['LoadExtensionSchemaUpdates'] : array();
1258
1259                 // Unset everyone else's hooks. Lord knows what someone might be doing
1260                 // in ParserFirstCallInit (see bug 27171)
1261                 $GLOBALS['wgHooks'] = array( 'LoadExtensionSchemaUpdates' => $hooksWeWant );
1262
1263                 return Status::newGood();
1264         }
1265
1266         /**
1267          * Get an array of install steps. Should always be in the format of
1268          * array(
1269          *   'name'     => 'someuniquename',
1270          *   'callback' => array( $obj, 'method' ),
1271          * )
1272          * There must be a config-install-$name message defined per step, which will
1273          * be shown on install.
1274          *
1275          * @param $installer DatabaseInstaller so we can make callbacks
1276          * @return array
1277          */
1278         protected function getInstallSteps( DatabaseInstaller $installer ) {
1279                 $coreInstallSteps = array(
1280                         array( 'name' => 'database',   'callback' => array( $installer, 'setupDatabase' ) ),
1281                         array( 'name' => 'tables',     'callback' => array( $installer, 'createTables' ) ),
1282                         array( 'name' => 'interwiki',  'callback' => array( $installer, 'populateInterwikiTable' ) ),
1283                         array( 'name' => 'stats',      'callback' => array( $this, 'populateSiteStats' ) ),
1284                         array( 'name' => 'keys',       'callback' => array( $this, 'generateKeys' ) ),
1285                         array( 'name' => 'sysop',      'callback' => array( $this, 'createSysop' ) ),
1286                         array( 'name' => 'mainpage',   'callback' => array( $this, 'createMainpage' ) ),
1287                 );
1288
1289                 // Build the array of install steps starting from the core install list,
1290                 // then adding any callbacks that wanted to attach after a given step
1291                 foreach( $coreInstallSteps as $step ) {
1292                         $this->installSteps[] = $step;
1293                         if( isset( $this->extraInstallSteps[ $step['name'] ] ) ) {
1294                                 $this->installSteps = array_merge(
1295                                         $this->installSteps,
1296                                         $this->extraInstallSteps[ $step['name'] ]
1297                                 );
1298                         }
1299                 }
1300
1301                 // Prepend any steps that want to be at the beginning
1302                 if( isset( $this->extraInstallSteps['BEGINNING'] ) ) {
1303                         $this->installSteps = array_merge(
1304                                 $this->extraInstallSteps['BEGINNING'],
1305                                 $this->installSteps
1306                         );
1307                 }
1308
1309                 // Extensions should always go first, chance to tie into hooks and such
1310                 if( count( $this->getVar( '_Extensions' ) ) ) {
1311                         array_unshift( $this->installSteps,
1312                                 array( 'name' => 'extensions', 'callback' => array( $this, 'includeExtensions' ) )
1313                         );
1314                         $this->installSteps[] = array(
1315                                 'name' => 'extension-tables',
1316                                 'callback' => array( $installer, 'createExtensionTables' )
1317                         );
1318                 }
1319                 return $this->installSteps;
1320         }
1321
1322         /**
1323          * Actually perform the installation.
1324          *
1325          * @param $startCB Array A callback array for the beginning of each step
1326          * @param $endCB Array A callback array for the end of each step
1327          *
1328          * @return Array of Status objects
1329          */
1330         public function performInstallation( $startCB, $endCB ) {
1331                 $installResults = array();
1332                 $installer = $this->getDBInstaller();
1333                 $installer->preInstall();
1334                 $steps = $this->getInstallSteps( $installer );
1335                 foreach( $steps as $stepObj ) {
1336                         $name = $stepObj['name'];
1337                         call_user_func_array( $startCB, array( $name ) );
1338
1339                         // Perform the callback step
1340                         $status = call_user_func( $stepObj['callback'], $installer );
1341
1342                         // Output and save the results
1343                         call_user_func( $endCB, $name, $status );
1344                         $installResults[$name] = $status;
1345
1346                         // If we've hit some sort of fatal, we need to bail.
1347                         // Callback already had a chance to do output above.
1348                         if( !$status->isOk() ) {
1349                                 break;
1350                         }
1351                 }
1352                 if( $status->isOk() ) {
1353                         $this->setVar( '_InstallDone', true );
1354                 }
1355                 return $installResults;
1356         }
1357
1358         /**
1359          * Generate $wgSecretKey. Will warn if we had to use mt_rand() instead of
1360          * /dev/urandom
1361          *
1362          * @return Status
1363          */
1364         public function generateKeys() {
1365                 $keys = array( 'wgSecretKey' => 64 );
1366                 if ( strval( $this->getVar( 'wgUpgradeKey' ) ) === '' ) {
1367                         $keys['wgUpgradeKey'] = 16;
1368                 }
1369                 return $this->doGenerateKeys( $keys );
1370         }
1371
1372         /**
1373          * Generate a secret value for variables using either
1374          * /dev/urandom or mt_rand(). Produce a warning in the later case.
1375          *
1376          * @param $keys Array
1377          * @return Status
1378          */
1379         protected function doGenerateKeys( $keys ) {
1380                 $status = Status::newGood();
1381
1382                 wfSuppressWarnings();
1383                 $file = fopen( "/dev/urandom", "r" );
1384                 wfRestoreWarnings();
1385
1386                 foreach ( $keys as $name => $length ) {
1387                         if ( $file ) {
1388                                         $secretKey = bin2hex( fread( $file, $length / 2 ) );
1389                         } else {
1390                                 $secretKey = '';
1391
1392                                 for ( $i = 0; $i < $length / 8; $i++ ) {
1393                                         $secretKey .= dechex( mt_rand( 0, 0x7fffffff ) );
1394                                 }
1395                         }
1396
1397                         $this->setVar( $name, $secretKey );
1398                 }
1399
1400                 if ( $file ) {
1401                         fclose( $file );
1402                 } else {
1403                         $names = array_keys ( $keys );
1404                         $names = preg_replace( '/^(.*)$/', '\$$1', $names );
1405                         global $wgLang;
1406                         $status->warning( 'config-insecure-keys', $wgLang->listToText( $names ), count( $names ) );
1407                 }
1408
1409                 return $status;
1410         }
1411
1412         /**
1413          * Create the first user account, grant it sysop and bureaucrat rights
1414          *
1415          * @return Status
1416          */
1417         protected function createSysop() {
1418                 $name = $this->getVar( '_AdminName' );
1419                 $user = User::newFromName( $name );
1420
1421                 if ( !$user ) {
1422                         // We should've validated this earlier anyway!
1423                         return Status::newFatal( 'config-admin-error-user', $name );
1424                 }
1425
1426                 if ( $user->idForName() == 0 ) {
1427                         $user->addToDatabase();
1428
1429                         try {
1430                                 $user->setPassword( $this->getVar( '_AdminPassword' ) );
1431                         } catch( PasswordError $pwe ) {
1432                                 return Status::newFatal( 'config-admin-error-password', $name, $pwe->getMessage() );
1433                         }
1434
1435                         $user->addGroup( 'sysop' );
1436                         $user->addGroup( 'bureaucrat' );
1437                         if( $this->getVar( '_AdminEmail' ) ) {
1438                                 $user->setEmail( $this->getVar( '_AdminEmail' ) );
1439                         }
1440                         $user->saveSettings();
1441
1442                         // Update user count
1443                         $ssUpdate = new SiteStatsUpdate( 0, 0, 0, 0, 1 );
1444                         $ssUpdate->doUpdate();
1445                 }
1446                 $status = Status::newGood();
1447
1448                 if( $this->getVar( '_Subscribe' ) && $this->getVar( '_AdminEmail' ) ) {
1449                         $this->subscribeToMediaWikiAnnounce( $status );
1450                 }
1451
1452                 return $status;
1453         }
1454
1455         private function subscribeToMediaWikiAnnounce( Status $s ) {
1456                 $params = array(
1457                         'email'    => $this->getVar( '_AdminEmail' ),
1458                         'language' => 'en',
1459                         'digest'   => 0
1460                 );
1461
1462                 // Mailman doesn't support as many languages as we do, so check to make
1463                 // sure their selected language is available
1464                 $myLang = $this->getVar( '_UserLang' );
1465                 if( in_array( $myLang, $this->mediaWikiAnnounceLanguages ) ) {
1466                         $myLang = $myLang == 'pt-br' ? 'pt_BR' : $myLang; // rewrite to Mailman's pt_BR
1467                         $params['language'] = $myLang;
1468                 }
1469
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         }
1476
1477         /**
1478          * Insert Main Page with default content.
1479          *
1480          * @return Status
1481          */
1482         protected function createMainpage( DatabaseInstaller $installer ) {
1483                 $status = Status::newGood();
1484                 try {
1485                         $article = new Article( Title::newMainPage() );
1486                         $article->doEdit( wfMsgForContent( 'mainpagetext' ) . "\n\n" .
1487                                                                 wfMsgForContent( 'mainpagedocfooter' ),
1488                                                                 '',
1489                                                                 EDIT_NEW,
1490                                                                 false,
1491                                                                 User::newFromName( 'MediaWiki default' ) );
1492                 } catch (MWException $e) {
1493                         //using raw, because $wgShowExceptionDetails can not be set yet
1494                         $status->fatal( 'config-install-mainpage-failed', $e->getMessage() );
1495                 }
1496
1497                 return $status;
1498         }
1499
1500         /**
1501          * Override the necessary bits of the config to run an installation.
1502          */
1503         public static function overrideConfig() {
1504                 define( 'MW_NO_SESSION', 1 );
1505
1506                 // Don't access the database
1507                 $GLOBALS['wgUseDatabaseMessages'] = false;
1508                 // Debug-friendly
1509                 $GLOBALS['wgShowExceptionDetails'] = true;
1510                 // Don't break forms
1511                 $GLOBALS['wgExternalLinkTarget'] = '_blank';
1512
1513                 // Extended debugging
1514                 $GLOBALS['wgShowSQLErrors'] = true;
1515                 $GLOBALS['wgShowDBErrorBacktrace'] = true;
1516
1517                 // Allow multiple ob_flush() calls
1518                 $GLOBALS['wgDisableOutputCompression'] = true;
1519
1520                 // Use a sensible cookie prefix (not my_wiki)
1521                 $GLOBALS['wgCookiePrefix'] = 'mw_installer';
1522
1523                 // Some of the environment checks make shell requests, remove limits
1524                 $GLOBALS['wgMaxShellMemory'] = 0;
1525         }
1526
1527         /**
1528          * Add an installation step following the given step.
1529          *
1530          * @param $callback Array A valid installation callback array, in this form:
1531          *    array( 'name' => 'some-unique-name', 'callback' => array( $obj, 'function' ) );
1532          * @param $findStep String the step to find. Omit to put the step at the beginning
1533          */
1534         public function addInstallStep( $callback, $findStep = 'BEGINNING' ) {
1535                 $this->extraInstallSteps[$findStep][] = $callback;
1536         }
1537
1538         /**
1539          * Disable the time limit for execution.
1540          * Some long-running pages (Install, Upgrade) will want to do this
1541          */
1542         protected function disableTimeLimit() {
1543                 wfSuppressWarnings();
1544                 set_time_limit( 0 );
1545                 wfRestoreWarnings();
1546         }
1547 }