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