includes/installer/WebInstaller.php

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