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