includes/installer/WebInstaller.php

   1 <?php
   2 /**
   3  * Core installer web interface.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup Deployment
  22  */
  23
  24 /**
  25  * Class for the core installer web interface.
  26  *
  27  * @ingroup Deployment
  28  * @since 1.17
  29  */
  30 class WebInstaller extends Installer {
  31
  32         /**
  33          * @var WebInstallerOutput
  34          */
  35         public $output;
  36
  37         /**
  38          * WebRequest object.
  39          *
  40          * @var WebRequest
  41          */
  42         public $request;
  43
  44         /**
  45          * Cached session array.
  46          *
  47          * @var array[]
  48          */
  49         protected $session;
  50
  51         /**
  52          * Captured PHP error text. Temporary.
  53          *
  54          * @var string[]
  55          */
  56         protected $phpErrors;
  57
  58         /**
  59          * The main sequence of page names. These will be displayed in turn.
  60          *
  61          * To add a new installer page:
  62          *    * Add it to this WebInstaller::$pageSequence property
  63          *    * Add a "config-page-<name>" message
  64          *    * Add a "WebInstaller<name>" class
  65          *
  66          * @var string[]
  67          */
  68         public $pageSequence = array(
  69                 'Language',
  70                 'ExistingWiki',
  71                 'Welcome',
  72                 'DBConnect',
  73                 'Upgrade',
  74                 'DBSettings',
  75                 'Name',
  76                 'Options',
  77                 'Install',
  78                 'Complete',
  79         );
  80
  81         /**
  82          * Out of sequence pages, selectable by the user at any time.
  83          *
  84          * @var string[]
  85          */
  86         protected $otherPages = array(
  87                 'Restart',
  88                 'Readme',
  89                 'ReleaseNotes',
  90                 'Copying',
  91                 'UpgradeDoc', // Can't use Upgrade due to Upgrade step
  92         );
  93
  94         /**
  95          * Array of pages which have declared that they have been submitted, have validated
  96          * their input, and need no further processing.
  97          *
  98          * @var bool[]
  99          */
 100         protected $happyPages;
 101
 102         /**
 103          * List of "skipped" pages. These are pages that will automatically continue
 104          * to the next page on any GET request. To avoid breaking the "back" button,
 105          * they need to be skipped during a back operation.
 106          *
 107          * @var bool[]
 108          */
 109         protected $skippedPages;
 110
 111         /**
 112          * Flag indicating that session data may have been lost.
 113          *
 114          * @var bool
 115          */
 116         public $showSessionWarning = false;
 117
 118         /**
 119          * Numeric index of the page we're on
 120          *
 121          * @var int
 122          */
 123         protected $tabIndex = 1;
 124
 125         /**
 126          * Name of the page we're on
 127          *
 128          * @var string
 129          */
 130         protected $currentPageName;
 131
 132         /**
 133          * Constructor.
 134          *
 135          * @param WebRequest $request
 136          */
 137         public function __construct( WebRequest $request ) {
 138                 parent::__construct();
 139                 $this->output = new WebInstallerOutput( $this );
 140                 $this->request = $request;
 141
 142                 // Add parser hooks
 143                 global $wgParser;
 144                 $wgParser->setHook( 'downloadlink', array( $this, 'downloadLinkHook' ) );
 145                 $wgParser->setHook( 'doclink', array( $this, 'docLink' ) );
 146         }
 147
 148         /**
 149          * Main entry point.
 150          *
 151          * @param array[] $session Initial session array
 152          *
 153          * @return array[] New session array
 154          */
 155         public function execute( array $session ) {
 156                 $this->session = $session;
 157
 158                 if ( isset( $session['settings'] ) ) {
 159                         $this->settings = $session['settings'] + $this->settings;
 160                 }
 161
 162                 $this->exportVars();
 163                 $this->setupLanguage();
 164
 165                 if ( ( $this->getVar( '_InstallDone' ) || $this->getVar( '_UpgradeDone' ) )
 166                         && $this->request->getVal( 'localsettings' )
 167                 ) {
 168                         $this->request->response()->header( 'Content-type: application/x-httpd-php' );
 169                         $this->request->response()->header(
 170                                 'Content-Disposition: attachment; filename="LocalSettings.php"'
 171                         );
 172
 173                         $ls = InstallerOverrides::getLocalSettingsGenerator( $this );
 174                         $rightsProfile = $this->rightsProfiles[$this->getVar( '_RightsProfile' )];
 175                         foreach ( $rightsProfile as $group => $rightsArr ) {
 176                                 $ls->setGroupRights( $group, $rightsArr );
 177                         }
 178                         echo $ls->getText();
 179
 180                         return $this->session;
 181                 }
 182
 183                 $isCSS = $this->request->getVal( 'css' );
 184                 if ( $isCSS ) {
 185                         $this->outputCss();
 186                         return $this->session;
 187                 }
 188
 189                 if ( isset( $session['happyPages'] ) ) {
 190                         $this->happyPages = $session['happyPages'];
 191                 } else {
 192                         $this->happyPages = array();
 193                 }
 194
 195                 if ( isset( $session['skippedPages'] ) ) {
 196                         $this->skippedPages = $session['skippedPages'];
 197                 } else {
 198                         $this->skippedPages = array();
 199                 }
 200
 201                 $lowestUnhappy = $this->getLowestUnhappy();
 202
 203                 # Special case for Creative Commons partner chooser box.
 204                 if ( $this->request->getVal( 'SubmitCC' ) ) {
 205                         $page = $this->getPageByName( 'Options' );
 206                         $this->output->useShortHeader();
 207                         $this->output->allowFrames();
 208                         $page->submitCC();
 209
 210                         return $this->finish();
 211                 }
 212
 213                 if ( $this->request->getVal( 'ShowCC' ) ) {
 214                         $page = $this->getPageByName( 'Options' );
 215                         $this->output->useShortHeader();
 216                         $this->output->allowFrames();
 217                         $this->output->addHTML( $page->getCCDoneBox() );
 218
 219                         return $this->finish();
 220                 }
 221
 222                 # Get the page name.
 223                 $pageName = $this->request->getVal( 'page' );
 224
 225                 if ( in_array( $pageName, $this->otherPages ) ) {
 226                         # Out of sequence
 227                         $pageId = false;
 228                         $page = $this->getPageByName( $pageName );
 229                 } else {
 230                         # Main sequence
 231                         if ( !$pageName || !in_array( $pageName, $this->pageSequence ) ) {
 232                                 $pageId = $lowestUnhappy;
 233                         } else {
 234                                 $pageId = array_search( $pageName, $this->pageSequence );
 235                         }
 236
 237                         # If necessary, move back to the lowest-numbered unhappy page
 238                         if ( $pageId > $lowestUnhappy ) {
 239                                 $pageId = $lowestUnhappy;
 240                                 if ( $lowestUnhappy == 0 ) {
 241                                         # Knocked back to start, possible loss of session data.
 242                                         $this->showSessionWarning = true;
 243                                 }
 244                         }
 245
 246                         $pageName = $this->pageSequence[$pageId];
 247                         $page = $this->getPageByName( $pageName );
 248                 }
 249
 250                 # If a back button was submitted, go back without submitting the form data.
 251                 if ( $this->request->wasPosted() && $this->request->getBool( 'submit-back' ) ) {
 252                         if ( $this->request->getVal( 'lastPage' ) ) {
 253                                 $nextPage = $this->request->getVal( 'lastPage' );
 254                         } elseif ( $pageId !== false ) {
 255                                 # Main sequence page
 256                                 # Skip the skipped pages
 257                                 $nextPageId = $pageId;
 258
 259                                 do {
 260                                         $nextPageId--;
 261                                         $nextPage = $this->pageSequence[$nextPageId];
 262                                 } while ( isset( $this->skippedPages[$nextPage] ) );
 263                         } else {
 264                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 265                         }
 266
 267                         $this->output->redirect( $this->getUrl( array( 'page' => $nextPage ) ) );
 268
 269                         return $this->finish();
 270                 }
 271
 272                 # Execute the page.
 273                 $this->currentPageName = $page->getName();
 274                 $this->startPageWrapper( $pageName );
 275
 276                 if ( $page->isSlow() ) {
 277                         $this->disableTimeLimit();
 278                 }
 279
 280                 $result = $page->execute();
 281
 282                 $this->endPageWrapper();
 283
 284                 if ( $result == 'skip' ) {
 285                         # Page skipped without explicit submission.
 286                         # Skip it when we click "back" so that we don't just go forward again.
 287                         $this->skippedPages[$pageName] = true;
 288                         $result = 'continue';
 289                 } else {
 290                         unset( $this->skippedPages[$pageName] );
 291                 }
 292
 293                 # If it was posted, the page can request a continue to the next page.
 294                 if ( $result === 'continue' && !$this->output->headerDone() ) {
 295                         if ( $pageId !== false ) {
 296                                 $this->happyPages[$pageId] = true;
 297                         }
 298
 299                         $lowestUnhappy = $this->getLowestUnhappy();
 300
 301                         if ( $this->request->getVal( 'lastPage' ) ) {
 302                                 $nextPage = $this->request->getVal( 'lastPage' );
 303                         } elseif ( $pageId !== false ) {
 304                                 $nextPage = $this->pageSequence[$pageId + 1];
 305                         } else {
 306                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 307                         }
 308
 309                         if ( array_search( $nextPage, $this->pageSequence ) > $lowestUnhappy ) {
 310                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 311                         }
 312
 313                         $this->output->redirect( $this->getUrl( array( 'page' => $nextPage ) ) );
 314                 }
 315
 316                 return $this->finish();
 317         }
 318
 319         /**
 320          * Find the next page in sequence that hasn't been completed
 321          * @return int
 322          */
 323         public function getLowestUnhappy() {
 324                 if ( count( $this->happyPages ) == 0 ) {
 325                         return 0;
 326                 } else {
 327                         return max( array_keys( $this->happyPages ) ) + 1;
 328                 }
 329         }
 330
 331         /**
 332          * Start the PHP session. This may be called before execute() to start the PHP session.
 333          *
 334          * @throws Exception
 335          * @return bool
 336          */
 337         public function startSession() {
 338                 if ( wfIniGetBool( 'session.auto_start' ) || session_id() ) {
 339                         // Done already
 340                         return true;
 341                 }
 342
 343                 $this->phpErrors = array();
 344                 set_error_handler( array( $this, 'errorHandler' ) );
 345                 try {
 346                         session_start();
 347                 } catch ( Exception $e ) {
 348                         restore_error_handler();
 349                         throw $e;
 350                 }
 351                 restore_error_handler();
 352
 353                 if ( $this->phpErrors ) {
 354                         return false;
 355                 }
 356
 357                 return true;
 358         }
 359
 360         /**
 361          * Get a hash of data identifying this MW installation.
 362          *
 363          * This is used by mw-config/index.php to prevent multiple installations of MW
 364          * on the same cookie domain from interfering with each other.
 365          *
 366          * @return string
 367          */
 368         public function getFingerprint() {
 369                 // Get the base URL of the installation
 370                 $url = $this->request->getFullRequestURL();
 371                 if ( preg_match( '!^(.*\?)!', $url, $m ) ) {
 372                         // Trim query string
 373                         $url = $m[1];
 374                 }
 375                 if ( preg_match( '!^(.*)/[^/]*/[^/]*$!', $url, $m ) ) {
 376                         // This... seems to try to get the base path from
 377                         // the /mw-config/index.php. Kinda scary though?
 378                         $url = $m[1];
 379                 }
 380
 381                 return md5( serialize( array(
 382                         'local path' => dirname( __DIR__ ),
 383                         'url' => $url,
 384                         'version' => $GLOBALS['wgVersion']
 385                 ) ) );
 386         }
 387
 388         /**
 389          * Show an error message in a box. Parameters are like wfMessage().
 390          * @param string $msg
 391          */
 392         public function showError( $msg /*...*/ ) {
 393                 $args = func_get_args();
 394                 array_shift( $args );
 395                 $args = array_map( 'htmlspecialchars', $args );
 396                 $msg = wfMessage( $msg, $args )->useDatabase( false )->plain();
 397                 $this->output->addHTML( $this->getErrorBox( $msg ) );
 398         }
 399
 400         /**
 401          * Temporary error handler for session start debugging.
 402          *
 403          * @param int $errno Unused
 404          * @param string $errstr
 405          */
 406         public function errorHandler( $errno, $errstr ) {
 407                 $this->phpErrors[] = $errstr;
 408         }
 409
 410         /**
 411          * Clean up from execute()
 412          *
 413          * @return array[]
 414          */
 415         public function finish() {
 416                 $this->output->output();
 417
 418                 $this->session['happyPages'] = $this->happyPages;
 419                 $this->session['skippedPages'] = $this->skippedPages;
 420                 $this->session['settings'] = $this->settings;
 421
 422                 return $this->session;
 423         }
 424
 425         /**
 426          * We're restarting the installation, reset the session, happyPages, etc
 427          */
 428         public function reset() {
 429                 $this->session = array();
 430                 $this->happyPages = array();
 431                 $this->settings = array();
 432         }
 433
 434         /**
 435          * Get a URL for submission back to the same script.
 436          *
 437          * @param string[] $query
 438          *
 439          * @return string
 440          */
 441         public function getUrl( $query = array() ) {
 442                 $url = $this->request->getRequestURL();
 443                 # Remove existing query
 444                 $url = preg_replace( '/\?.*$/', '', $url );
 445
 446                 if ( $query ) {
 447                         $url .= '?' . wfArrayToCgi( $query );
 448                 }
 449
 450                 return $url;
 451         }
 452
 453         /**
 454          * Get a WebInstallerPage by name.
 455          *
 456          * @param string $pageName
 457          * @return WebInstallerPage
 458          */
 459         public function getPageByName( $pageName ) {
 460                 $pageClass = 'WebInstaller' . $pageName;
 461
 462                 return new $pageClass( $this );
 463         }
 464
 465         /**
 466          * Get a session variable.
 467          *
 468          * @param string $name
 469          * @param array $default
 470          *
 471          * @return array
 472          */
 473         public function getSession( $name, $default = null ) {
 474                 if ( !isset( $this->session[$name] ) ) {
 475                         return $default;
 476                 } else {
 477                         return $this->session[$name];
 478                 }
 479         }
 480
 481         /**
 482          * Set a session variable.
 483          *
 484          * @param string $name Key for the variable
 485          * @param mixed $value
 486          */
 487         public function setSession( $name, $value ) {
 488                 $this->session[$name] = $value;
 489         }
 490
 491         /**
 492          * Get the next tabindex attribute value.
 493          *
 494          * @return int
 495          */
 496         public function nextTabIndex() {
 497                 return $this->tabIndex++;
 498         }
 499
 500         /**
 501          * Initializes language-related variables.
 502          */
 503         public function setupLanguage() {
 504                 global $wgLang, $wgContLang, $wgLanguageCode;
 505
 506                 if ( $this->getSession( 'test' ) === null && !$this->request->wasPosted() ) {
 507                         $wgLanguageCode = $this->getAcceptLanguage();
 508                         $wgLang = $wgContLang = Language::factory( $wgLanguageCode );
 509                         $this->setVar( 'wgLanguageCode', $wgLanguageCode );
 510                         $this->setVar( '_UserLang', $wgLanguageCode );
 511                 } else {
 512                         $wgLanguageCode = $this->getVar( 'wgLanguageCode' );
 513                         $wgContLang = Language::factory( $wgLanguageCode );
 514                 }
 515         }
 516
 517         /**
 518          * Retrieves MediaWiki language from Accept-Language HTTP header.
 519          *
 520          * @return string
 521          */
 522         public function getAcceptLanguage() {
 523                 global $wgLanguageCode, $wgRequest;
 524
 525                 $mwLanguages = Language::fetchLanguageNames();
 526                 $headerLanguages = array_keys( $wgRequest->getAcceptLang() );
 527
 528                 foreach ( $headerLanguages as $lang ) {
 529                         if ( isset( $mwLanguages[$lang] ) ) {
 530                                 return $lang;
 531                         }
 532                 }
 533
 534                 return $wgLanguageCode;
 535         }
 536
 537         /**
 538          * Called by execute() before page output starts, to show a page list.
 539          *
 540          * @param string $currentPageName
 541          */
 542         private function startPageWrapper( $currentPageName ) {
 543                 $s = "<div class=\"config-page-wrapper\">\n";
 544                 $s .= "<div class=\"config-page\">\n";
 545                 $s .= "<div class=\"config-page-list\"><ul>\n";
 546                 $lastHappy = -1;
 547
 548                 foreach ( $this->pageSequence as $id => $pageName ) {
 549                         $happy = !empty( $this->happyPages[$id] );
 550                         $s .= $this->getPageListItem(
 551                                 $pageName,
 552                                 $happy || $lastHappy == $id - 1,
 553                                 $currentPageName
 554                         );
 555
 556                         if ( $happy ) {
 557                                 $lastHappy = $id;
 558                         }
 559                 }
 560
 561                 $s .= "</ul><br/><ul>\n";
 562                 $s .= $this->getPageListItem( 'Restart', true, $currentPageName );
 563                 // End list pane
 564                 $s .= "</ul></div>\n";
 565
 566                 // Messages:
 567                 // config-page-language, config-page-welcome, config-page-dbconnect, config-page-upgrade,
 568                 // config-page-dbsettings, config-page-name, config-page-options, config-page-install,
 569                 // config-page-complete, config-page-restart, config-page-readme, config-page-releasenotes,
 570                 // config-page-copying, config-page-upgradedoc, config-page-existingwiki
 571                 $s .= Html::element( 'h2', array(),
 572                         wfMessage( 'config-page-' . strtolower( $currentPageName ) )->text() );
 573
 574                 $this->output->addHTMLNoFlush( $s );
 575         }
 576
 577         /**
 578          * Get a list item for the page list.
 579          *
 580          * @param string $pageName
 581          * @param bool $enabled
 582          * @param string $currentPageName
 583          *
 584          * @return string
 585          */
 586         private function getPageListItem( $pageName, $enabled, $currentPageName ) {
 587                 $s = "<li class=\"config-page-list-item\">";
 588
 589                 // Messages:
 590                 // config-page-language, config-page-welcome, config-page-dbconnect, config-page-upgrade,
 591                 // config-page-dbsettings, config-page-name, config-page-options, config-page-install,
 592                 // config-page-complete, config-page-restart, config-page-readme, config-page-releasenotes,
 593                 // config-page-copying, config-page-upgradedoc, config-page-existingwiki
 594                 $name = wfMessage( 'config-page-' . strtolower( $pageName ) )->text();
 595
 596                 if ( $enabled ) {
 597                         $query = array( 'page' => $pageName );
 598
 599                         if ( !in_array( $pageName, $this->pageSequence ) ) {
 600                                 if ( in_array( $currentPageName, $this->pageSequence ) ) {
 601                                         $query['lastPage'] = $currentPageName;
 602                                 }
 603
 604                                 $link = Html::element( 'a',
 605                                         array(
 606                                                 'href' => $this->getUrl( $query )
 607                                         ),
 608                                         $name
 609                                 );
 610                         } else {
 611                                 $link = htmlspecialchars( $name );
 612                         }
 613
 614                         if ( $pageName == $currentPageName ) {
 615                                 $s .= "<span class=\"config-page-current\">$link</span>";
 616                         } else {
 617                                 $s .= $link;
 618                         }
 619                 } else {
 620                         $s .= Html::element( 'span',
 621                                 array(
 622                                         'class' => 'config-page-disabled'
 623                                 ),
 624                                 $name
 625                         );
 626                 }
 627
 628                 $s .= "</li>\n";
 629
 630                 return $s;
 631         }
 632
 633         /**
 634          * Output some stuff after a page is finished.
 635          */
 636         private function endPageWrapper() {
 637                 $this->output->addHTMLNoFlush(
 638                         "<div class=\"visualClear\"></div>\n" .
 639                         "</div>\n" .
 640                         "<div class=\"visualClear\"></div>\n" .
 641                         "</div>" );
 642         }
 643
 644         /**
 645          * Get HTML for an error box with an icon.
 646          *
 647          * @param string $text Wikitext, get this with wfMessage()->plain()
 648          *
 649          * @return string
 650          */
 651         public function getErrorBox( $text ) {
 652                 return $this->getInfoBox( $text, 'critical-32.png', 'config-error-box' );
 653         }
 654
 655         /**
 656          * Get HTML for a warning box with an icon.
 657          *
 658          * @param string $text Wikitext, get this with wfMessage()->plain()
 659          *
 660          * @return string
 661          */
 662         public function getWarningBox( $text ) {
 663                 return $this->getInfoBox( $text, 'warning-32.png', 'config-warning-box' );
 664         }
 665
 666         /**
 667          * Get HTML for an info box with an icon.
 668          *
 669          * @param string $text Wikitext, get this with wfMessage()->plain()
 670          * @param string|bool $icon Icon name, file in mw-config/images. Default: false
 671          * @param string|bool $class Additional class name to add to the wrapper div. Default: false.
 672          *
 673          * @return string
 674          */
 675         public function getInfoBox( $text, $icon = false, $class = false ) {
 676                 $text = $this->parse( $text, true );
 677                 $icon = ( $icon == false ) ?
 678                         'images/info-32.png' :
 679                         'images/' . $icon;
 680                 $alt = wfMessage( 'config-information' )->text();
 681
 682                 return Html::infoBox( $text, $icon, $alt, $class );
 683         }
 684
 685         /**
 686          * Get small text indented help for a preceding form field.
 687          * Parameters like wfMessage().
 688          *
 689          * @param string $msg
 690          * @return string
 691          */
 692         public function getHelpBox( $msg /*, ... */ ) {
 693                 $args = func_get_args();
 694                 array_shift( $args );
 695                 $args = array_map( 'htmlspecialchars', $args );
 696                 $text = wfMessage( $msg, $args )->useDatabase( false )->plain();
 697                 $html = $this->parse( $text, true );
 698
 699                 return "<div class=\"config-help-field-container\">\n" .
 700                         "<span class=\"config-help-field-hint\" title=\"" .
 701                         wfMessage( 'config-help-tooltip' )->escaped() . "\">" .
 702                         wfMessage( 'config-help' )->escaped() . "</span>\n" .
 703                         "<span class=\"config-help-field-data\">" . $html . "</span>\n" .
 704                         "</div>\n";
 705         }
 706
 707         /**
 708          * Output a help box.
 709          * @param string $msg Key for wfMessage()
 710          */
 711         public function showHelpBox( $msg /*, ... */ ) {
 712                 $args = func_get_args();
 713                 $html = call_user_func_array( array( $this, 'getHelpBox' ), $args );
 714                 $this->output->addHTML( $html );
 715         }
 716
 717         /**
 718          * Show a short informational message.
 719          * Output looks like a list.
 720          *
 721          * @param string $msg
 722          */
 723         public function showMessage( $msg /*, ... */ ) {
 724                 $args = func_get_args();
 725                 array_shift( $args );
 726                 $html = '<div class="config-message">' .
 727                         $this->parse( wfMessage( $msg, $args )->useDatabase( false )->plain() ) .
 728                         "</div>\n";
 729                 $this->output->addHTML( $html );
 730         }
 731
 732         /**
 733          * @param Status $status
 734          */
 735         public function showStatusMessage( Status $status ) {
 736                 $errors = array_merge( $status->getErrorsArray(), $status->getWarningsArray() );
 737                 foreach ( $errors as $error ) {
 738                         call_user_func_array( array( $this, 'showMessage' ), $error );
 739                 }
 740         }
 741
 742         /**
 743          * Label a control by wrapping a config-input div around it and putting a
 744          * label before it.
 745          *
 746          * @param string $msg
 747          * @param string $forId
 748          * @param string $contents
 749          * @param string $helpData
 750          * @return string
 751          */
 752         public function label( $msg, $forId, $contents, $helpData = "" ) {
 753                 if ( strval( $msg ) == '' ) {
 754                         $labelText = '&#160;';
 755                 } else {
 756                         $labelText = wfMessage( $msg )->escaped();
 757                 }
 758
 759                 $attributes = array( 'class' => 'config-label' );
 760
 761                 if ( $forId ) {
 762                         $attributes['for'] = $forId;
 763                 }
 764
 765                 return "<div class=\"config-block\">\n" .
 766                         "  <div class=\"config-block-label\">\n" .
 767                         Xml::tags( 'label',
 768                                 $attributes,
 769                                 $labelText
 770                         ) . "\n" .
 771                         $helpData .
 772                         "  </div>\n" .
 773                         "  <div class=\"config-block-elements\">\n" .
 774                         $contents .
 775                         "  </div>\n" .
 776                         "</div>\n";
 777         }
 778
 779         /**
 780          * Get a labelled text box to configure a variable.
 781          *
 782          * @param mixed[] $params
 783          *    Parameters are:
 784          *      var:         The variable to be configured (required)
 785          *      label:       The message name for the label (required)
 786          *      attribs:     Additional attributes for the input element (optional)
 787          *      controlName: The name for the input element (optional)
 788          *      value:       The current value of the variable (optional)
 789          *      help:        The html for the help text (optional)
 790          *
 791          * @return string
 792          */
 793         public function getTextBox( $params ) {
 794                 if ( !isset( $params['controlName'] ) ) {
 795                         $params['controlName'] = 'config_' . $params['var'];
 796                 }
 797
 798                 if ( !isset( $params['value'] ) ) {
 799                         $params['value'] = $this->getVar( $params['var'] );
 800                 }
 801
 802                 if ( !isset( $params['attribs'] ) ) {
 803                         $params['attribs'] = array();
 804                 }
 805                 if ( !isset( $params['help'] ) ) {
 806                         $params['help'] = "";
 807                 }
 808
 809                 return $this->label(
 810                         $params['label'],
 811                         $params['controlName'],
 812                         Xml::input(
 813                                 $params['controlName'],
 814                                 30, // intended to be overridden by CSS
 815                                 $params['value'],
 816                                 $params['attribs'] + array(
 817                                         'id' => $params['controlName'],
 818                                         'class' => 'config-input-text',
 819                                         'tabindex' => $this->nextTabIndex()
 820                                 )
 821                         ),
 822                         $params['help']
 823                 );
 824         }
 825
 826         /**
 827          * Get a labelled textarea to configure a variable
 828          *
 829          * @param mixed[] $params
 830          *    Parameters are:
 831          *      var:         The variable to be configured (required)
 832          *      label:       The message name for the label (required)
 833          *      attribs:     Additional attributes for the input element (optional)
 834          *      controlName: The name for the input element (optional)
 835          *      value:       The current value of the variable (optional)
 836          *      help:        The html for the help text (optional)
 837          *
 838          * @return string
 839          */
 840         public function getTextArea( $params ) {
 841                 if ( !isset( $params['controlName'] ) ) {
 842                         $params['controlName'] = 'config_' . $params['var'];
 843                 }
 844
 845                 if ( !isset( $params['value'] ) ) {
 846                         $params['value'] = $this->getVar( $params['var'] );
 847                 }
 848
 849                 if ( !isset( $params['attribs'] ) ) {
 850                         $params['attribs'] = array();
 851                 }
 852                 if ( !isset( $params['help'] ) ) {
 853                         $params['help'] = "";
 854                 }
 855
 856                 return $this->label(
 857                         $params['label'],
 858                         $params['controlName'],
 859                         Xml::textarea(
 860                                 $params['controlName'],
 861                                 $params['value'],
 862                                 30,
 863                                 5,
 864                                 $params['attribs'] + array(
 865                                         'id' => $params['controlName'],
 866                                         'class' => 'config-input-text',
 867                                         'tabindex' => $this->nextTabIndex()
 868                                 )
 869                         ),
 870                         $params['help']
 871                 );
 872         }
 873
 874         /**
 875          * Get a labelled password box to configure a variable.
 876          *
 877          * Implements password hiding
 878          * @param mixed[] $params
 879          *    Parameters are:
 880          *      var:         The variable to be configured (required)
 881          *      label:       The message name for the label (required)
 882          *      attribs:     Additional attributes for the input element (optional)
 883          *      controlName: The name for the input element (optional)
 884          *      value:       The current value of the variable (optional)
 885          *      help:        The html for the help text (optional)
 886          *
 887          * @return string
 888          */
 889         public function getPasswordBox( $params ) {
 890                 if ( !isset( $params['value'] ) ) {
 891                         $params['value'] = $this->getVar( $params['var'] );
 892                 }
 893
 894                 if ( !isset( $params['attribs'] ) ) {
 895                         $params['attribs'] = array();
 896                 }
 897
 898                 $params['value'] = $this->getFakePassword( $params['value'] );
 899                 $params['attribs']['type'] = 'password';
 900
 901                 return $this->getTextBox( $params );
 902         }
 903
 904         /**
 905          * Get a labelled checkbox to configure a boolean variable.
 906          *
 907          * @param mixed[] $params
 908          *    Parameters are:
 909          *      var:         The variable to be configured (required)
 910          *      label:       The message name for the label (required)
 911          *      attribs:     Additional attributes for the input element (optional)
 912          *      controlName: The name for the input element (optional)
 913          *      value:       The current value of the variable (optional)
 914          *      help:        The html for the help text (optional)
 915          *
 916          * @return string
 917          */
 918         public function getCheckBox( $params ) {
 919                 if ( !isset( $params['controlName'] ) ) {
 920                         $params['controlName'] = 'config_' . $params['var'];
 921                 }
 922
 923                 if ( !isset( $params['value'] ) ) {
 924                         $params['value'] = $this->getVar( $params['var'] );
 925                 }
 926
 927                 if ( !isset( $params['attribs'] ) ) {
 928                         $params['attribs'] = array();
 929                 }
 930                 if ( !isset( $params['help'] ) ) {
 931                         $params['help'] = "";
 932                 }
 933                 if ( isset( $params['rawtext'] ) ) {
 934                         $labelText = $params['rawtext'];
 935                 } else {
 936                         $labelText = $this->parse( wfMessage( $params['label'] )->text() );
 937                 }
 938
 939                 return "<div class=\"config-input-check\">\n" .
 940                         $params['help'] .
 941                         "<label>\n" .
 942                         Xml::check(
 943                                 $params['controlName'],
 944                                 $params['value'],
 945                                 $params['attribs'] + array(
 946                                         'id' => $params['controlName'],
 947                                         'tabindex' => $this->nextTabIndex(),
 948                                 )
 949                         ) .
 950                         $labelText . "\n" .
 951                         "</label>\n" .
 952                         "</div>\n";
 953         }
 954
 955         /**
 956          * Get a set of labelled radio buttons.
 957          *
 958          * @param mixed[] $params
 959          *    Parameters are:
 960          *      var:             The variable to be configured (required)
 961          *      label:           The message name for the label (required)
 962          *      itemLabelPrefix: The message name prefix for the item labels (required)
 963          *      itemLabels:      List of message names to use for the item labels instead of itemLabelPrefix, keyed by values
 964          *      values:          List of allowed values (required)
 965          *      itemAttribs:     Array of attribute arrays, outer key is the value name (optional)
 966          *      commonAttribs:   Attribute array applied to all items
 967          *      controlName:     The name for the input element (optional)
 968          *      value:           The current value of the variable (optional)
 969          *      help:            The html for the help text (optional)
 970          *
 971          * @return string
 972          */
 973         public function getRadioSet( $params ) {
 974                 $items = $this->getRadioElements( $params );
 975
 976                 if ( !isset( $params['label'] ) ) {
 977                         $label = '';
 978                 } else {
 979                         $label = $params['label'];
 980                 }
 981
 982                 if ( !isset( $params['controlName'] ) ) {
 983                         $params['controlName'] = 'config_' . $params['var'];
 984                 }
 985
 986                 if ( !isset( $params['help'] ) ) {
 987                         $params['help'] = "";
 988                 }
 989
 990                 $s = "<ul>\n";
 991                 foreach ( $items as $value => $item ) {
 992                         $s .= "<li>$item</li>\n";
 993                 }
 994                 $s .= "</ul>\n";
 995
 996                 return $this->label( $label, $params['controlName'], $s, $params['help'] );
 997         }
 998
 999         /**
1000          * Get a set of labelled radio buttons. You probably want to use getRadioSet(), not this.
1001          *
1002          * @see getRadioSet
1003          *
1004          * @return array
1005          */
1006         public function getRadioElements( $params ) {
1007                 if ( !isset( $params['controlName'] ) ) {
1008                         $params['controlName'] = 'config_' . $params['var'];
1009                 }
1010
1011                 if ( !isset( $params['value'] ) ) {
1012                         $params['value'] = $this->getVar( $params['var'] );
1013                 }
1014
1015                 $items = array();
1016
1017                 foreach ( $params['values'] as $value ) {
1018                         $itemAttribs = array();
1019
1020                         if ( isset( $params['commonAttribs'] ) ) {
1021                                 $itemAttribs = $params['commonAttribs'];
1022                         }
1023
1024                         if ( isset( $params['itemAttribs'][$value] ) ) {
1025                                 $itemAttribs = $params['itemAttribs'][$value] + $itemAttribs;
1026                         }
1027
1028                         $checked = $value == $params['value'];
1029                         $id = $params['controlName'] . '_' . $value;
1030                         $itemAttribs['id'] = $id;
1031                         $itemAttribs['tabindex'] = $this->nextTabIndex();
1032
1033                         $items[$value] =
1034                                 Xml::radio( $params['controlName'], $value, $checked, $itemAttribs ) .
1035                                 '&#160;' .
1036                                 Xml::tags( 'label', array( 'for' => $id ), $this->parse(
1037                                         isset( $params['itemLabels'] ) ?
1038                                                 wfMessage( $params['itemLabels'][$value] )->plain() :
1039                                                 wfMessage( $params['itemLabelPrefix'] . strtolower( $value ) )->plain()
1040                                 ) );
1041                 }
1042
1043                 return $items;
1044         }
1045
1046         /**
1047          * Output an error or warning box using a Status object.
1048          *
1049          * @param Status $status
1050          */
1051         public function showStatusBox( $status ) {
1052                 if ( !$status->isGood() ) {
1053                         $text = $status->getWikiText();
1054
1055                         if ( $status->isOk() ) {
1056                                 $box = $this->getWarningBox( $text );
1057                         } else {
1058                                 $box = $this->getErrorBox( $text );
1059                         }
1060
1061                         $this->output->addHTML( $box );
1062                 }
1063         }
1064
1065         /**
1066          * Convenience function to set variables based on form data.
1067          * Assumes that variables containing "password" in the name are (potentially
1068          * fake) passwords.
1069          *
1070          * @param string[] $varNames
1071          * @param string $prefix The prefix added to variables to obtain form names
1072          *
1073          * @return string[]
1074          */
1075         public function setVarsFromRequest( $varNames, $prefix = 'config_' ) {
1076                 $newValues = array();
1077
1078                 foreach ( $varNames as $name ) {
1079                         $value = $this->request->getVal( $prefix . $name );
1080                         // bug 30524, do not trim passwords
1081                         if ( stripos( $name, 'password' ) === false ) {
1082                                 $value = trim( $value );
1083                         }
1084                         $newValues[$name] = $value;
1085
1086                         if ( $value === null ) {
1087                                 // Checkbox?
1088                                 $this->setVar( $name, false );
1089                         } else {
1090                                 if ( stripos( $name, 'password' ) !== false ) {
1091                                         $this->setPassword( $name, $value );
1092                                 } else {
1093                                         $this->setVar( $name, $value );
1094                                 }
1095                         }
1096                 }
1097
1098                 return $newValues;
1099         }
1100
1101         /**
1102          * Helper for Installer::docLink()
1103          *
1104          * @param string $page
1105          *
1106          * @return string
1107          */
1108         protected function getDocUrl( $page ) {
1109                 $url = "{$_SERVER['PHP_SELF']}?page=" . urlencode( $page );
1110
1111                 if ( in_array( $this->currentPageName, $this->pageSequence ) ) {
1112                         $url .= '&lastPage=' . urlencode( $this->currentPageName );
1113                 }
1114
1115                 return $url;
1116         }
1117
1118         /**
1119          * Extension tag hook for a documentation link.
1120          *
1121          * @param string $linkText
1122          * @param string[] $attribs
1123          * @param Parser $parser Unused
1124          *
1125          * @return string
1126          */
1127         public function docLink( $linkText, $attribs, $parser ) {
1128                 $url = $this->getDocUrl( $attribs['href'] );
1129
1130                 return '<a href="' . htmlspecialchars( $url ) . '">' .
1131                         htmlspecialchars( $linkText ) .
1132                         '</a>';
1133         }
1134
1135         /**
1136          * Helper for "Download LocalSettings" link on WebInstall_Complete
1137          *
1138          * @param string $text Unused
1139          * @param string[] $attribs Unused
1140          * @param Parser $parser Unused
1141          *
1142          * @return string Html for download link
1143          */
1144         public function downloadLinkHook( $text, $attribs, $parser ) {
1145                 $anchor = Html::rawElement( 'a',
1146                         array( 'href' => $this->getURL( array( 'localsettings' => 1 ) ) ),
1147                         wfMessage( 'config-download-localsettings' )->parse()
1148                 );
1149
1150                 return Html::rawElement( 'div', array( 'class' => 'config-download-link' ), $anchor );
1151         }
1152
1153         /**
1154          * @return bool
1155          */
1156         public function envCheckPath() {
1157                 // PHP_SELF isn't available sometimes, such as when PHP is CGI but
1158                 // cgi.fix_pathinfo is disabled. In that case, fall back to SCRIPT_NAME
1159                 // to get the path to the current script... hopefully it's reliable. SIGH
1160                 $path = false;
1161                 if ( !empty( $_SERVER['PHP_SELF'] ) ) {
1162                         $path = $_SERVER['PHP_SELF'];
1163                 } elseif ( !empty( $_SERVER['SCRIPT_NAME'] ) ) {
1164                         $path = $_SERVER['SCRIPT_NAME'];
1165                 }
1166                 if ( $path === false ) {
1167                         $this->showError( 'config-no-uri' );
1168                         return false;
1169                 }
1170
1171                 return parent::envCheckPath();
1172         }
1173
1174         public function envPrepPath() {
1175                 parent::envPrepPath();
1176                 // PHP_SELF isn't available sometimes, such as when PHP is CGI but
1177                 // cgi.fix_pathinfo is disabled. In that case, fall back to SCRIPT_NAME
1178                 // to get the path to the current script... hopefully it's reliable. SIGH
1179                 $path = false;
1180                 if ( !empty( $_SERVER['PHP_SELF'] ) ) {
1181                         $path = $_SERVER['PHP_SELF'];
1182                 } elseif ( !empty( $_SERVER['SCRIPT_NAME'] ) ) {
1183                         $path = $_SERVER['SCRIPT_NAME'];
1184                 }
1185                 if ( $path !== false ) {
1186                         $scriptPath = preg_replace( '{^(.*)/(mw-)?config.*$}', '$1', $path );
1187
1188                         $this->setVar( 'wgScriptPath', "$scriptPath" );
1189                         // Update variables set from Setup.php that are derived from wgScriptPath
1190                         $this->setVar( 'wgScript', "$scriptPath/index.php" );
1191                         $this->setVar( 'wgLoadScript', "$scriptPath/load.php" );
1192                         $this->setVar( 'wgStylePath', "$scriptPath/skins" );
1193                         $this->setVar( 'wgLocalStylePath', "$scriptPath/skins" );
1194                         $this->setVar( 'wgExtensionAssetsPath', "$scriptPath/extensions" );
1195                         $this->setVar( 'wgUploadPath', "$scriptPath/images" );
1196                         $this->setVar( 'wgResourceBasePath', "$scriptPath" );
1197                 }
1198         }
1199
1200         /**
1201          * @return string
1202          */
1203         protected function envGetDefaultServer() {
1204                 return WebRequest::detectServer();
1205         }
1206
1207         /**
1208          * Output stylesheet for web installer pages
1209          */
1210         public function outputCss() {
1211                 $this->request->response()->header( 'Content-type: text/css' );
1212                 echo $this->output->getCSS();
1213         }
1214
1215         /**
1216          * @return string[]
1217          */
1218         public function getPhpErrors() {
1219                 return $this->phpErrors;
1220         }
1221
1222 }