includes/installer/WebInstaller.php

   1 <?php
   2
   3 /**
   4  * Class for the core installer web interface.
   5  *
   6  * @ingroup Deployment
   7  * @since 1.17
   8  */
   9 class WebInstaller extends CoreInstaller {
  10
  11         /**
  12          * @var WebInstallerOutput
  13          */
  14         public $output;
  15
  16         /**
  17          * WebRequest object.
  18          *
  19          * @var WebRequest
  20          */
  21         public $request;
  22
  23         /**
  24          * Cached session array.
  25          *
  26          * @var array
  27          */
  28         public $session;
  29
  30         /**
  31          * Captured PHP error text. Temporary.
  32          */
  33         public $phpErrors;
  34
  35         /**
  36          * The main sequence of page names. These will be displayed in turn.
  37          * To add one:
  38          *    * Add it here
  39          *    * Add a config-page-<name> message
  40          *    * Add a WebInstaller_<name> class
  41          */
  42         public $pageSequence = array(
  43                 'Language',
  44                 'Welcome',
  45                 'DBConnect',
  46                 'Upgrade',
  47                 'DBSettings',
  48                 'Name',
  49                 'Options',
  50                 'Install',
  51                 'Complete',
  52         );
  53
  54         /**
  55          * Out of sequence pages, selectable by the user at any time.
  56          */
  57         public $otherPages = array(
  58                 'Restart',
  59                 'Readme',
  60                 'ReleaseNotes',
  61                 'Copying',
  62                 'UpgradeDoc', // Can't use Upgrade due to Upgrade step
  63         );
  64
  65         /**
  66          * Array of pages which have declared that they have been submitted, have validated
  67          * their input, and need no further processing.
  68          */
  69         public $happyPages;
  70
  71         /**
  72          * List of "skipped" pages. These are pages that will automatically continue
  73          * to the next page on any GET request. To avoid breaking the "back" button,
  74          * they need to be skipped during a back operation.
  75          */
  76         public $skippedPages;
  77
  78         /**
  79          * Flag indicating that session data may have been lost.
  80          */
  81         public $showSessionWarning = false;
  82
  83         public $helpId = 0;
  84         public $tabIndex = 1;
  85
  86         public $currentPageName;
  87
  88         /**
  89          * Constructor.
  90          *
  91          * @param WebRequest $request
  92          */
  93         public function __construct( WebRequest $request ) {
  94                 parent::__construct();
  95                 $this->output = new WebInstallerOutput( $this );
  96                 $this->request = $request;
  97         }
  98
  99         /**
 100          * Main entry point.
 101          *
 102          * @param $session Array: initial session array
 103          *
 104          * @return Array: new session array
 105          */
 106         public function execute( array $session ) {
 107                 $this->session = $session;
 108
 109                 if ( isset( $session['settings'] ) ) {
 110                         $this->settings = $session['settings'] + $this->settings;
 111                 }
 112
 113                 $this->exportVars();
 114                 $this->setupLanguage();
 115
 116                 if( $this->getVar( '_InstallDone' ) && $this->request->getVal( 'localsettings' ) )
 117                 {
 118                         $ls = new LocalSettingsGenerator( $this );
 119                         $this->request->response()->header('Content-type: text/plain');
 120
 121                         $this->request->response()->header(
 122                                 'Content-Disposition: attachment; filename="LocalSettings.php"'
 123                         );
 124
 125                         echo $ls->getText();
 126                         return $this->session;
 127                 }
 128
 129                 if ( isset( $session['happyPages'] ) ) {
 130                         $this->happyPages = $session['happyPages'];
 131                 } else {
 132                         $this->happyPages = array();
 133                 }
 134
 135                 if ( isset( $session['skippedPages'] ) ) {
 136                         $this->skippedPages = $session['skippedPages'];
 137                 } else {
 138                         $this->skippedPages = array();
 139                 }
 140
 141                 $lowestUnhappy = $this->getLowestUnhappy();
 142
 143                 # Special case for Creative Commons partner chooser box.
 144                 if ( $this->request->getVal( 'SubmitCC' ) ) {
 145                         $page = $this->getPageByName( 'Options' );
 146                         $this->output->useShortHeader();
 147                         $page->submitCC();
 148                         return $this->finish();
 149                 }
 150
 151                 if ( $this->request->getVal( 'ShowCC' ) ) {
 152                         $page = $this->getPageByName( 'Options' );
 153                         $this->output->useShortHeader();
 154                         $this->output->addHTML( $page->getCCDoneBox() );
 155                         return $this->finish();
 156                 }
 157
 158                 # Get the page name.
 159                 $pageName = $this->request->getVal( 'page' );
 160
 161                 if ( in_array( $pageName, $this->otherPages ) ) {
 162                         # Out of sequence
 163                         $pageId = false;
 164                         $page = $this->getPageByName( $pageName );
 165                 } else {
 166                         # Main sequence
 167                         if ( !$pageName || !in_array( $pageName, $this->pageSequence ) ) {
 168                                 $pageId = $lowestUnhappy;
 169                         } else {
 170                                 $pageId = array_search( $pageName, $this->pageSequence );
 171                         }
 172
 173                         # If necessary, move back to the lowest-numbered unhappy page
 174                         if ( $pageId > $lowestUnhappy ) {
 175                                 $pageId = $lowestUnhappy;
 176                                 if ( $lowestUnhappy == 0 ) {
 177                                         # Knocked back to start, possible loss of session data.
 178                                         $this->showSessionWarning = true;
 179                                 }
 180                         }
 181
 182                         $pageName = $this->pageSequence[$pageId];
 183                         $page = $this->getPageByName( $pageName );
 184                 }
 185
 186                 # If a back button was submitted, go back without submitting the form data.
 187                 if ( $this->request->wasPosted() && $this->request->getBool( 'submit-back' ) ) {
 188                         if ( $this->request->getVal( 'lastPage' ) ) {
 189                                 $nextPage = $this->request->getVal( 'lastPage' );
 190                         } elseif ( $pageId !== false ) {
 191                                 # Main sequence page
 192                                 # Skip the skipped pages
 193                                 $nextPageId = $pageId;
 194
 195                                 do {
 196                                         $nextPageId--;
 197                                         $nextPage = $this->pageSequence[$nextPageId];
 198                                 } while( isset( $this->skippedPages[$nextPage] ) );
 199                         } else {
 200                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 201                         }
 202
 203                         $this->output->redirect( $this->getUrl( array( 'page' => $nextPage ) ) );
 204                         return $this->finish();
 205                 }
 206
 207                 # Execute the page.
 208                 $this->currentPageName = $page->getName();
 209                 $this->startPageWrapper( $pageName );
 210                 $localSettings = $this->getLocalSettingsStatus();
 211
 212                 if( !$localSettings->isGood() ) {
 213                         $this->showStatusBox( $localSettings );
 214                         $result = 'output';
 215                 } else {
 216                         $result = $page->execute();
 217                 }
 218
 219                 $this->endPageWrapper();
 220
 221                 if ( $result == 'skip' ) {
 222                         # Page skipped without explicit submission.
 223                         # Skip it when we click "back" so that we don't just go forward again.
 224                         $this->skippedPages[$pageName] = true;
 225                         $result = 'continue';
 226                 } else {
 227                         unset( $this->skippedPages[$pageName] );
 228                 }
 229
 230                 # If it was posted, the page can request a continue to the next page.
 231                 if ( $result === 'continue' && !$this->output->headerDone() ) {
 232                         if ( $pageId !== false ) {
 233                                 $this->happyPages[$pageId] = true;
 234                         }
 235
 236                         $lowestUnhappy = $this->getLowestUnhappy();
 237
 238                         if ( $this->request->getVal( 'lastPage' ) ) {
 239                                 $nextPage = $this->request->getVal( 'lastPage' );
 240                         } elseif ( $pageId !== false ) {
 241                                 $nextPage = $this->pageSequence[$pageId + 1];
 242                         } else {
 243                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 244                         }
 245
 246                         if ( array_search( $nextPage, $this->pageSequence ) > $lowestUnhappy ) {
 247                                 $nextPage = $this->pageSequence[$lowestUnhappy];
 248                         }
 249
 250                         $this->output->redirect( $this->getUrl( array( 'page' => $nextPage ) ) );
 251                 }
 252
 253                 return $this->finish();
 254         }
 255
 256         public function getLowestUnhappy() {
 257                 if ( count( $this->happyPages ) == 0 ) {
 258                         return 0;
 259                 } else {
 260                         return max( array_keys( $this->happyPages ) ) + 1;
 261                 }
 262         }
 263
 264         /**
 265          * Start the PHP session. This may be called before execute() to start the PHP session.
 266          */
 267         public function startSession() {
 268                 $sessPath = $this->getSessionSavePath();
 269
 270                 if( $sessPath != '' ) {
 271                         if( strval( ini_get( 'open_basedir' ) ) != '' ) {
 272                                 // we need to skip the following check when open_basedir is on.
 273                                 // The session path probably *wont* be writable by the current
 274                                 // user, and telling them to change it is bad. Bug 23021.
 275                         } elseif( !is_dir( $sessPath ) || !is_writeable( $sessPath ) ) {
 276                                 $this->showError( 'config-session-path-bad', $sessPath );
 277                                 return false;
 278                         }
 279                 } else {
 280                         // If the path is unset it'll default to some system bit, which *probably* is ok...
 281                         // not sure how to actually get what will be used.
 282                 }
 283
 284                 if( wfIniGetBool( 'session.auto_start' ) || session_id() ) {
 285                         // Done already
 286                         return true;
 287                 }
 288
 289                 $this->phpErrors = array();
 290                 set_error_handler( array( $this, 'errorHandler' ) );
 291                 session_start();
 292                 restore_error_handler();
 293
 294                 if ( $this->phpErrors ) {
 295                         $this->showError( 'config-session-error', $this->phpErrors[0] );
 296                         return false;
 297                 }
 298
 299                 return true;
 300         }
 301
 302         /**
 303          * Get the value of session.save_path
 304          *
 305          * Per http://www.php.net/manual/en/session.configuration.php#ini.session.save-path,
 306          * this might have some additional preceding parts which need to be
 307          * ditched
 308          *
 309          * @return String
 310          */
 311         private function getSessionSavePath() {
 312                 $path = ini_get( 'session.save_path' );
 313                 $path = ltrim( substr( $path, strrpos( $path, ';' ) ), ';');
 314
 315                 return $path;
 316         }
 317
 318         /**
 319          * Show an error message in a box. Parameters are like wfMsg().
 320          */
 321         public function showError( $msg /*...*/ ) {
 322                 $args = func_get_args();
 323                 array_shift( $args );
 324                 $args = array_map( 'htmlspecialchars', $args );
 325                 $msg = wfMsgReal( $msg, $args, false, false, false );
 326                 $this->output->addHTML( $this->getErrorBox( $msg ) );
 327         }
 328
 329         /**
 330          * Temporary error handler for session start debugging.
 331          */
 332         public function errorHandler( $errno, $errstr ) {
 333                 $this->phpErrors[] = $errstr;
 334         }
 335
 336         /**
 337          * Clean up from execute()
 338          *
 339          * @return array
 340          */
 341         public function finish() {
 342                 $this->output->output();
 343
 344                 $this->session['happyPages'] = $this->happyPages;
 345                 $this->session['skippedPages'] = $this->skippedPages;
 346                 $this->session['settings'] = $this->settings;
 347
 348                 return $this->session;
 349         }
 350
 351         /**
 352          * Get a URL for submission back to the same script.
 353          *
 354          * @param $query: Array
 355          */
 356         public function getUrl( $query = array() ) {
 357                 $url = $this->request->getRequestURL();
 358                 # Remove existing query
 359                 $url = preg_replace( '/\?.*$/', '', $url );
 360
 361                 if ( $query ) {
 362                         $url .= '?' . wfArrayToCGI( $query );
 363                 }
 364
 365                 return $url;
 366         }
 367
 368         /**
 369          * Get a WebInstallerPage from the main sequence, by ID.
 370          *
 371          * @param $id Integer
 372          *
 373          * @return WebInstallerPage
 374          */
 375         public function getPageById( $id ) {
 376                 return $this->getPageByName( $this->pageSequence[$id] );
 377         }
 378
 379         /**
 380          * Get a WebInstallerPage by name.
 381          *
 382          * @param $pageName String
 383          *
 384          * @return WebInstallerPage
 385          */
 386         public function getPageByName( $pageName ) {
 387                 // Totally lame way to force autoload of WebInstallerPage.php
 388                 class_exists( 'WebInstallerPage' );
 389
 390                 $pageClass = 'WebInstaller_' . $pageName;
 391
 392                 return new $pageClass( $this );
 393         }
 394
 395         /**
 396          * Get a session variable.
 397          *
 398          * @param $name String
 399          * @param $default
 400          */
 401         public function getSession( $name, $default = null ) {
 402                 if ( !isset( $this->session[$name] ) ) {
 403                         return $default;
 404                 } else {
 405                         return $this->session[$name];
 406                 }
 407         }
 408
 409         /**
 410          * Set a session variable.
 411          */
 412         public function setSession( $name, $value ) {
 413                 $this->session[$name] = $value;
 414         }
 415
 416         /**
 417          * Get the next tabindex attribute value.
 418          */
 419         public function nextTabIndex() {
 420                 return $this->tabIndex++;
 421         }
 422
 423         /**
 424          * Initializes language-related variables.
 425          */
 426         public function setupLanguage() {
 427                 global $wgLang, $wgContLang, $wgLanguageCode;
 428
 429                 if ( $this->getSession( 'test' ) === null && !$this->request->wasPosted() ) {
 430                         $wgLanguageCode = $this->getAcceptLanguage();
 431                         $wgLang = $wgContLang = Language::factory( $wgLanguageCode );
 432                         $this->setVar( 'wgLanguageCode', $wgLanguageCode );
 433                         $this->setVar( '_UserLang', $wgLanguageCode );
 434                 } else {
 435                         $wgLanguageCode = $this->getVar( 'wgLanguageCode' );
 436                         $wgLang = Language::factory( $this->getVar( '_UserLang' ) );
 437                         $wgContLang = Language::factory( $wgLanguageCode );
 438                 }
 439         }
 440
 441         /**
 442          * Retrieves MediaWiki language from Accept-Language HTTP header.
 443          *
 444          * @return string
 445          */
 446         public function getAcceptLanguage() {
 447                 global $wgLanguageCode, $wgRequest;
 448
 449                 $mwLanguages = Language::getLanguageNames();
 450                 $headerLanguages = array_keys( $wgRequest->getAcceptLang() );
 451
 452                 foreach ( $headerLanguages as $lang ) {
 453                         if ( isset( $mwLanguages[$lang] ) ) {
 454                                 return $lang;
 455                         }
 456                 }
 457
 458                 return $wgLanguageCode;
 459         }
 460
 461         /**
 462          * Called by execute() before page output starts, to show a page list.
 463          *
 464          * @param $currentPageName String
 465          */
 466         public function startPageWrapper( $currentPageName ) {
 467                 $s = "<div class=\"config-page-wrapper\">\n" .
 468                         "<div class=\"config-page-list\"><ul>\n";
 469                 $lastHappy = -1;
 470
 471                 foreach ( $this->pageSequence as $id => $pageName ) {
 472                         $happy = !empty( $this->happyPages[$id] );
 473                         $s .= $this->getPageListItem(
 474                                 $pageName,
 475                                 $happy || $lastHappy == $id - 1,
 476                                 $currentPageName
 477                         );
 478
 479                         if ( $happy ) {
 480                                 $lastHappy = $id;
 481                         }
 482                 }
 483
 484                 $s .= "</ul><br/><ul>\n";
 485
 486                 foreach ( $this->otherPages as $pageName ) {
 487                         $s .= $this->getPageListItem( $pageName, true, $currentPageName );
 488                 }
 489
 490                 $s .= "</ul></div>\n". // end list pane
 491                         "<div class=\"config-page\">\n" .
 492                         Xml::element( 'h2', array(),
 493                                 wfMsg( 'config-page-' . strtolower( $currentPageName ) ) );
 494
 495                 $this->output->addHTMLNoFlush( $s );
 496         }
 497
 498         /**
 499          * Get a list item for the page list.
 500          *
 501          * @param $pageName String
 502          * @param $enabled Boolean
 503          * @param $currentPageName String
 504          *
 505          * @return string
 506          */
 507         public function getPageListItem( $pageName, $enabled, $currentPageName ) {
 508                 $s = "<li class=\"config-page-list-item\">";
 509                 $name = wfMsg( 'config-page-' . strtolower( $pageName ) );
 510
 511                 if ( $enabled ) {
 512                         $query = array( 'page' => $pageName );
 513
 514                         if ( !in_array( $pageName, $this->pageSequence ) ) {
 515                                 if ( in_array( $currentPageName, $this->pageSequence ) ) {
 516                                         $query['lastPage'] = $currentPageName;
 517                                 }
 518
 519                                 $link = Xml::element( 'a',
 520                                         array(
 521                                                 'href' => $this->getUrl( $query )
 522                                         ),
 523                                         $name
 524                                 );
 525                         } else {
 526                                 $link = htmlspecialchars( $name );
 527                         }
 528
 529                         if ( $pageName == $currentPageName ) {
 530                                 $s .= "<span class=\"config-page-current\">$link</span>";
 531                         } else {
 532                                 $s .= $link;
 533                         }
 534                 } else {
 535                         $s .= Xml::element( 'span',
 536                                 array(
 537                                         'class' => 'config-page-disabled'
 538                                 ),
 539                                 $name
 540                         );
 541                 }
 542
 543                 $s .= "</li>\n";
 544
 545                 return $s;
 546         }
 547
 548         /**
 549          * Output some stuff after a page is finished.
 550          */
 551         public function endPageWrapper() {
 552                 $this->output->addHTMLNoFlush(
 553                         "</div>\n" .
 554                         "<br style=\"clear:both\"/>\n" .
 555                         "</div>" );
 556         }
 557
 558         /**
 559          * Get HTML for an error box with an icon.
 560          *
 561          * @param $text String: wikitext, get this with wfMsgNoTrans()
 562          */
 563         public function getErrorBox( $text ) {
 564                 return $this->getInfoBox( $text, 'critical-32.png', 'config-error-box' );
 565         }
 566
 567         /**
 568          * Get HTML for a warning box with an icon.
 569          *
 570          * @param $text String: wikitext, get this with wfMsgNoTrans()
 571          */
 572         public function getWarningBox( $text ) {
 573                 return $this->getInfoBox( $text, 'warning-32.png', 'config-warning-box' );
 574         }
 575
 576         /**
 577          * Get HTML for an info box with an icon.
 578          *
 579          * @param $text String: wikitext, get this with wfMsgNoTrans()
 580          * @param $icon String: icon name, file in skins/common/images
 581          * @param $class String: additional class name to add to the wrapper div
 582          */
 583         public function getInfoBox( $text, $icon = 'info-32.png', $class = false ) {
 584                 $s =
 585                         "<div class=\"config-info $class\">\n" .
 586                                 "<div class=\"config-info-left\">\n" .
 587                                 Xml::element( 'img',
 588                                         array(
 589                                                 'src' => '../skins/common/images/' . $icon,
 590                                                 'alt' => wfMsg( 'config-information' ),
 591                                         )
 592                                 ) . "\n" .
 593                                 "</div>\n" .
 594                                 "<div class=\"config-info-right\">\n" .
 595                                         $this->parse( $text ) . "\n" .
 596                                 "</div>\n" .
 597                                 "<div style=\"clear: left;\"></div>\n" .
 598                         "</div>\n";
 599                 return $s;
 600         }
 601
 602         /**
 603          * Get small text indented help for a preceding form field.
 604          * Parameters like wfMsg().
 605          */
 606         public function getHelpBox( $msg /*, ... */ ) {
 607                 $args = func_get_args();
 608                 array_shift( $args );
 609                 $args = array_map( 'htmlspecialchars', $args );
 610
 611                 $text = wfMsgReal( $msg, $args, false, false, false );
 612                 $html = $this->parse( $text, true );
 613                 $id = $this->helpId++;
 614                 $alt = wfMsg( 'help' );
 615
 616                 return
 617                         "<div class=\"config-help-wrapper\">\n" .
 618                         "<div class=\"config-help-message\">\n" .
 619                          $html .
 620                         "</div>\n" .
 621                         "<div class=\"config-show-help\">\n" .
 622                         "<a href=\"#\">" .
 623                         wfMsgHtml( 'config-show-help' ) .
 624                         "</a></div>\n" .
 625                         "<div class=\"config-hide-help\">\n" .
 626                         "<a href=\"#\">" .
 627                         wfMsgHtml( 'config-hide-help' ) .
 628                         "</a></div>\n</div>\n";
 629         }
 630
 631         /**
 632          * Output a help box.
 633          */
 634         public function showHelpBox( $msg /*, ... */ ) {
 635                 $args = func_get_args();
 636                 $html = call_user_func_array( array( $this, 'getHelpBox' ), $args );
 637                 $this->output->addHTML( $html );
 638         }
 639
 640         /**
 641          * Show a short informational message.
 642          * Output looks like a list.
 643          *
 644          * @param srting $msg
 645          */
 646         public function showMessage( $msg /*, ... */ ) {
 647                 $args = func_get_args();
 648                 array_shift( $args );
 649                 $html = '<div class="config-message">' .
 650                         $this->parse( wfMsgReal( $msg, $args, false, false, false ) ) .
 651                         "</div>\n";
 652                 $this->output->addHTML( $html );
 653         }
 654
 655         /**
 656          * @param Status $status
 657          */
 658         public function showStatusMessage( Status $status ) {
 659                 $text = $status->getWikiText();
 660                 $this->output->addWikiText(
 661                         "<div class=\"config-message\">\n" .
 662                         $text .
 663                         "</div>"
 664                 );
 665         }
 666
 667         /**
 668          * Label a control by wrapping a config-input div around it and putting a
 669          * label before it.
 670          */
 671         public function label( $msg, $forId, $contents ) {
 672                 if ( strval( $msg ) == '' ) {
 673                         $labelText = '&#160;';
 674                 } else {
 675                         $labelText = wfMsgHtml( $msg );
 676                 }
 677
 678                 $attributes = array( 'class' => 'config-label' );
 679
 680                 if ( $forId ) {
 681                         $attributes['for'] = $forId;
 682                 }
 683
 684                 return
 685                         "<div class=\"config-input\">\n" .
 686                         Xml::tags( 'label',
 687                                 $attributes,
 688                                 $labelText ) . "\n" .
 689                         $contents .
 690                         "</div>\n";
 691         }
 692
 693         /**
 694          * Get a labelled text box to configure a variable.
 695          *
 696          * @param $params Array
 697          *    Parameters are:
 698          *      var:        The variable to be configured (required)
 699          *      label:      The message name for the label (required)
 700          *      attribs:    Additional attributes for the input element (optional)
 701          *      controlName: The name for the input element (optional)
 702          *      value:      The current value of the variable (optional)
 703          */
 704         public function getTextBox( $params ) {
 705                 if ( !isset( $params['controlName'] ) ) {
 706                         $params['controlName'] = 'config_' . $params['var'];
 707                 }
 708
 709                 if ( !isset( $params['value'] ) ) {
 710                         $params['value'] = $this->getVar( $params['var'] );
 711                 }
 712
 713                 if ( !isset( $params['attribs'] ) ) {
 714                         $params['attribs'] = array();
 715                 }
 716
 717                 return
 718                         $this->label(
 719                                 $params['label'],
 720                                 $params['controlName'],
 721                                 Xml::input(
 722                                         $params['controlName'],
 723                                         30, // intended to be overridden by CSS
 724                                         $params['value'],
 725                                         $params['attribs'] + array(
 726                                                 'id' => $params['controlName'],
 727                                                 'class' => 'config-input-text',
 728                                                 'tabindex' => $this->nextTabIndex()
 729                                         )
 730                                 )
 731                         );
 732         }
 733
 734         /**
 735          * Get a labelled password box to configure a variable.
 736          *
 737          * Implements password hiding
 738          * @param $params Array
 739          *    Parameters are:
 740          *      var:        The variable to be configured (required)
 741          *      label:      The message name for the label (required)
 742          *      attribs:    Additional attributes for the input element (optional)
 743          *      controlName: The name for the input element (optional)
 744          *      value:      The current value of the variable (optional)
 745          */
 746         public function getPasswordBox( $params ) {
 747                 if ( !isset( $params['value'] ) ) {
 748                         $params['value'] = $this->getVar( $params['var'] );
 749                 }
 750
 751                 if ( !isset( $params['attribs'] ) ) {
 752                         $params['attribs'] = array();
 753                 }
 754
 755                 $params['value'] = $this->getFakePassword( $params['value'] );
 756                 $params['attribs']['type'] = 'password';
 757
 758                 return $this->getTextBox( $params );
 759         }
 760
 761         /**
 762          * Get a labelled checkbox to configure a boolean variable.
 763          *
 764          * @param $params Array
 765          *    Parameters are:
 766          *      var:        The variable to be configured (required)
 767          *      label:      The message name for the label (required)
 768          *      attribs:    Additional attributes for the input element (optional)
 769          *      controlName: The name for the input element (optional)
 770          *      value:      The current value of the variable (optional)
 771          */
 772         public function getCheckBox( $params ) {
 773                 if ( !isset( $params['controlName'] ) ) {
 774                         $params['controlName'] = 'config_' . $params['var'];
 775                 }
 776
 777                 if ( !isset( $params['value'] ) ) {
 778                         $params['value'] = $this->getVar( $params['var'] );
 779                 }
 780
 781                 if ( !isset( $params['attribs'] ) ) {
 782                         $params['attribs'] = array();
 783                 }
 784
 785                 if( isset( $params['rawtext'] ) ) {
 786                         $labelText = $params['rawtext'];
 787                 } else {
 788                         $labelText = $this->parse( wfMsg( $params['label'] ) );
 789                 }
 790
 791                 return
 792                         "<div class=\"config-input-check\">\n" .
 793                         "<label>\n" .
 794                         Xml::check(
 795                                 $params['controlName'],
 796                                 $params['value'],
 797                                 $params['attribs'] + array(
 798                                         'id' => $params['controlName'],
 799                                         'class' => 'config-input-text',
 800                                         'tabindex' => $this->nextTabIndex(),
 801                                 )
 802                         ) .
 803                         $labelText . "\n" .
 804                         "</label>\n" .
 805                         "</div>\n";
 806         }
 807
 808         /**
 809          * Get a set of labelled radio buttons.
 810          *
 811          * @param $params Array
 812          *    Parameters are:
 813          *      var:            The variable to be configured (required)
 814          *      label:          The message name for the label (required)
 815          *      itemLabelPrefix: The message name prefix for the item labels (required)
 816          *      values:         List of allowed values (required)
 817          *      itemAttribs     Array of attribute arrays, outer key is the value name (optional)
 818          *      commonAttribs   Attribute array applied to all items
 819          *      controlName:    The name for the input element (optional)
 820          *      value:          The current value of the variable (optional)
 821          */
 822         public function getRadioSet( $params ) {
 823                 if ( !isset( $params['controlName']  ) ) {
 824                         $params['controlName'] = 'config_' . $params['var'];
 825                 }
 826
 827                 if ( !isset( $params['value'] ) ) {
 828                         $params['value'] = $this->getVar( $params['var'] );
 829                 }
 830
 831                 if ( !isset( $params['label'] ) ) {
 832                         $label = '';
 833                 } else {
 834                         $label = $this->parse( wfMsgNoTrans( $params['label'] ) );
 835                 }
 836
 837                 $s = "<label class=\"config-label\">\n" .
 838                         $label .
 839                         "</label>\n" .
 840                         "<ul class=\"config-settings-block\">\n";
 841                 foreach ( $params['values'] as $value ) {
 842                         $itemAttribs = array();
 843
 844                         if ( isset( $params['commonAttribs'] ) ) {
 845                                 $itemAttribs = $params['commonAttribs'];
 846                         }
 847
 848                         if ( isset( $params['itemAttribs'][$value] ) ) {
 849                                 $itemAttribs = $params['itemAttribs'][$value] + $itemAttribs;
 850                         }
 851
 852                         $checked = $value == $params['value'];
 853                         $id = $params['controlName'] . '_' . $value;
 854                         $itemAttribs['id'] = $id;
 855                         $itemAttribs['tabindex'] = $this->nextTabIndex();
 856
 857                         $s .=
 858                                 '<li>' .
 859                                 Xml::radio( $params['controlName'], $value, $checked, $itemAttribs ) .
 860                                 '&#160;' .
 861                                 Xml::tags( 'label', array( 'for' => $id ), $this->parse(
 862                                         wfMsgNoTrans( $params['itemLabelPrefix'] . strtolower( $value ) )
 863                                 ) ) .
 864                                 "</li>\n";
 865                 }
 866
 867                 $s .= "</ul>\n";
 868                 return $s;
 869         }
 870
 871         /**
 872          * Output an error or warning box using a Status object.
 873          */
 874         public function showStatusBox( $status ) {
 875                 if( !$status->isGood() ) {
 876                         $text = $status->getWikiText();
 877
 878                         if( $status->isOk() ) {
 879                                 $box = $this->getWarningBox( $text );
 880                         } else {
 881                                 $box = $this->getErrorBox( $text );
 882                         }
 883
 884                         $this->output->addHTML( $box );
 885                 }
 886         }
 887
 888         /**
 889          * Convenience function to set variables based on form data.
 890          * Assumes that variables containing "password" in the name are (potentially
 891          * fake) passwords.
 892          *
 893          * @param $varNames Array
 894          * @param $prefix String: the prefix added to variables to obtain form names
 895          */
 896         public function setVarsFromRequest( $varNames, $prefix = 'config_' ) {
 897                 $newValues = array();
 898
 899                 foreach ( $varNames as $name ) {
 900                         $value = trim( $this->request->getVal( $prefix . $name ) );
 901                         $newValues[$name] = $value;
 902
 903                         if ( $value === null ) {
 904                                 // Checkbox?
 905                                 $this->setVar( $name, false );
 906                         } else {
 907                                 if ( stripos( $name, 'password' ) !== false ) {
 908                                         $this->setPassword( $name, $value );
 909                                 } else {
 910                                         $this->setVar( $name, $value );
 911                                 }
 912                         }
 913                 }
 914
 915                 return $newValues;
 916         }
 917
 918         /**
 919          * Get the starting tags of a fieldset.
 920          *
 921          * @param $legend String: message name
 922          */
 923         public function getFieldsetStart( $legend ) {
 924                 return "\n<fieldset><legend>" . wfMsgHtml( $legend ) . "</legend>\n";
 925         }
 926
 927         /**
 928          * Get the end tag of a fieldset.
 929          */
 930         public function getFieldsetEnd() {
 931                 return "</fieldset>\n";
 932         }
 933
 934         /**
 935          * Helper for Installer::docLink()
 936          */
 937         public function getDocUrl( $page ) {
 938                 $url = "{$_SERVER['PHP_SELF']}?page=" . urlencode( $page );
 939
 940                 if ( in_array( $this->currentPageName, $this->pageSequence ) ) {
 941                         $url .= '&lastPage=' . urlencode( $this->currentPageName );
 942                 }
 943
 944                 return $url;
 945         }
 946
 947 }