includes/EditPage.php

   1 <?php
   2 /**
   3  * Contains the EditPage class
   4  * @file
   5  */
   6
   7 /**
   8  * The edit page/HTML interface (split from Article)
   9  * The actual database and text munging is still in Article,
  10  * but it should get easier to call those from alternate
  11  * interfaces.
  12  *
  13  * EditPage cares about two distinct titles:
  14  * $wgTitle is the page that forms submit to, links point to,
  15  * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  16  * page in the database that is actually being edited. These are
  17  * usually the same, but they are now allowed to be different.
  18  */
  19 class EditPage {
  20         const AS_SUCCESS_UPDATE            = 200;
  21         const AS_SUCCESS_NEW_ARTICLE       = 201;
  22         const AS_HOOK_ERROR                = 210;
  23         const AS_FILTERING                 = 211;
  24         const AS_HOOK_ERROR_EXPECTED       = 212;
  25         const AS_BLOCKED_PAGE_FOR_USER     = 215;
  26         const AS_CONTENT_TOO_BIG           = 216;
  27         const AS_USER_CANNOT_EDIT          = 217;
  28         const AS_READ_ONLY_PAGE_ANON       = 218;
  29         const AS_READ_ONLY_PAGE_LOGGED     = 219;
  30         const AS_READ_ONLY_PAGE            = 220;
  31         const AS_RATE_LIMITED              = 221;
  32         const AS_ARTICLE_WAS_DELETED       = 222;
  33         const AS_NO_CREATE_PERMISSION      = 223;
  34         const AS_BLANK_ARTICLE             = 224;
  35         const AS_CONFLICT_DETECTED         = 225;
  36         const AS_SUMMARY_NEEDED            = 226;
  37         const AS_TEXTBOX_EMPTY             = 228;
  38         const AS_MAX_ARTICLE_SIZE_EXCEEDED = 229;
  39         const AS_OK                        = 230;
  40         const AS_END                       = 231;
  41         const AS_SPAM_ERROR                = 232;
  42         const AS_IMAGE_REDIRECT_ANON       = 233;
  43         const AS_IMAGE_REDIRECT_LOGGED     = 234;
  44
  45         var $mArticle;
  46         var $mTitle;
  47         var $action;
  48         var $isConflict = false;
  49         var $isCssJsSubpage = false;
  50         var $isCssSubpage = false;
  51         var $isJsSubpage = false;
  52         var $deletedSinceEdit = false;
  53         var $formtype;
  54         var $firsttime;
  55         var $lastDelete;
  56         var $mTokenOk = false;
  57         var $mTokenOkExceptSuffix = false;
  58         var $mTriedSave = false;
  59         var $tooBig = false;
  60         var $kblength = false;
  61         var $missingComment = false;
  62         var $missingSummary = false;
  63         var $allowBlankSummary = false;
  64         var $autoSumm = '';
  65         var $hookError = '';
  66         #var $mPreviewTemplates;
  67         var $mParserOutput;
  68         var $mBaseRevision = false;
  69         var $mShowSummaryField = true;
  70
  71         # Form values
  72         var $save = false, $preview = false, $diff = false;
  73         var $minoredit = false, $watchthis = false, $recreate = false;
  74         var $textbox1 = '', $textbox2 = '', $summary = '', $nosummary = false;
  75         var $edittime = '', $section = '', $starttime = '';
  76         var $oldid = 0, $editintro = '', $scrolltop = null, $bot = true;
  77
  78         # Placeholders for text injection by hooks (must be HTML)
  79         # extensions should take care to _append_ to the present value
  80         public $editFormPageTop; // Before even the preview
  81         public $editFormTextTop;
  82         public $editFormTextBeforeContent;
  83         public $editFormTextAfterWarn;
  84         public $editFormTextAfterTools;
  85         public $editFormTextBottom;
  86         public $editFormTextAfterContent;
  87         public $previewTextAfterContent;
  88
  89         /* $didSave should be set to true whenever an article was succesfully altered. */
  90         public $didSave = false;
  91         public $undidRev = 0;
  92
  93         public $suppressIntro = false;
  94
  95         /**
  96          * @todo document
  97          * @param $article
  98          */
  99         function EditPage( $article ) {
 100                 $this->mArticle =& $article;
 101                 $this->mTitle = $article->getTitle();
 102                 $this->action = 'submit';
 103
 104                 # Placeholders for text injection by hooks (empty per default)
 105                 $this->editFormPageTop =
 106                 $this->editFormTextTop =
 107                 $this->editFormTextBeforeContent =
 108                 $this->editFormTextAfterWarn =
 109                 $this->editFormTextAfterTools =
 110                 $this->editFormTextBottom =
 111                 $this->editFormTextAfterContent =
 112                 $this->previewTextAfterContent =
 113                 $this->mPreloadText = "";
 114         }
 115
 116         function getArticle() {
 117                 return $this->mArticle;
 118         }
 119
 120
 121         /**
 122          * Fetch initial editing page content.
 123          * @returns mixed string on success, $def_text for invalid sections
 124          * @private
 125          */
 126         function getContent( $def_text = '' ) {
 127                 global $wgOut, $wgRequest, $wgParser, $wgContLang, $wgMessageCache;
 128
 129                 wfProfileIn( __METHOD__ );
 130                 # Get variables from query string :P
 131                 $section = $wgRequest->getVal( 'section' );
 132
 133                 $preload = $wgRequest->getVal( 'preload',
 134                         // Custom preload text for new sections
 135                         $section === 'new' ? 'MediaWiki:addsection-preload' : '' );
 136                 $undoafter = $wgRequest->getVal( 'undoafter' );
 137                 $undo = $wgRequest->getVal( 'undo' );
 138
 139                 $text = '';
 140                 // For message page not locally set, use the i18n message.
 141                 // For other non-existent articles, use preload text if any.
 142                 if ( !$this->mTitle->exists() ) {
 143                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 144                                 # If this is a system message, get the default text.
 145                                 list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
 146                                 $text = wfMsgGetKey( $message, false, $lang, false );
 147                                 if( wfEmptyMsg( $message, $text ) )
 148                                         $text = $this->getPreloadedText( $preload );
 149                         } else {
 150                                 # If requested, preload some text.
 151                                 $text = $this->getPreloadedText( $preload );
 152                         }
 153                 // For existing pages, get text based on "undo" or section parameters.
 154                 } else {
 155                         $text = $this->mArticle->getContent();
 156                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 157                                 # If they got undoafter and undo round the wrong way, switch them
 158                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 159                         }
 160                         if ( $undo > 0 && $undo > $undoafter ) {
 161                                 # Undoing a specific edit overrides section editing; section-editing
 162                                 # doesn't work with undoing.
 163                                 if ( $undoafter ) {
 164                                         $undorev = Revision::newFromId( $undo );
 165                                         $oldrev = Revision::newFromId( $undoafter );
 166                                 } else {
 167                                         $undorev = Revision::newFromId( $undo );
 168                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 169                                 }
 170
 171                                 # Sanity check, make sure it's the right page,
 172                                 # the revisions exist and they were not deleted.
 173                                 # Otherwise, $text will be left as-is.
 174                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 175                                         $undorev->getPage() == $oldrev->getPage() &&
 176                                         $undorev->getPage() == $this->mArticle->getID() &&
 177                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 178                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 179
 180                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 181                                         if ( $undotext === false ) {
 182                                                 # Warn the user that something went wrong
 183                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 184                                         } else {
 185                                                 $text = $undotext;
 186                                                 # Inform the user of our success and set an automatic edit summary
 187                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 188                                                 $firstrev = $oldrev->getNext();
 189                                                 # If we just undid one rev, use an autosummary
 190                                                 if ( $firstrev->mId == $undo ) {
 191                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 192                                                         $this->undidRev = $undo;
 193                                                 }
 194                                                 $this->formtype = 'diff';
 195                                         }
 196                                 } else {
 197                                         // Failed basic sanity checks.
 198                                         // Older revisions may have been removed since the link
 199                                         // was created, or we may simply have got bogus input.
 200                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 201                                 }
 202                         } else if ( $section != '' ) {
 203                                 if ( $section == 'new' ) {
 204                                         $text = $this->getPreloadedText( $preload );
 205                                 } else {
 206                                         // Get section edit text (returns $def_text for invalid sections)
 207                                         $text = $wgParser->getSection( $text, $section, $def_text );
 208                                 }
 209                         }
 210                 }
 211
 212                 wfProfileOut( __METHOD__ );
 213                 return $text;
 214         }
 215
 216         /** Use this method before edit() to preload some text into the edit box */
 217         public function setPreloadedText( $text ) {
 218                 $this->mPreloadText = $text;
 219         }
 220
 221         /**
 222          * Get the contents to be preloaded into the box, either set by
 223          * an earlier setPreloadText() or by loading the given page.
 224          *
 225          * @param $preload String: representing the title to preload from.
 226          * @return String
 227          */
 228         protected function getPreloadedText( $preload ) {
 229                 global $wgUser, $wgParser;
 230                 if ( !empty( $this->mPreloadText ) ) {
 231                         return $this->mPreloadText;
 232                 } elseif ( $preload !== '' ) {
 233                         $title = Title::newFromText( $preload );
 234                         # Check for existence to avoid getting MediaWiki:Noarticletext
 235                         if ( isset( $title ) && $title->exists() && $title->userCanRead() ) {
 236                                 $article = new Article( $title );
 237
 238                                 if ( $article->isRedirect() ) {
 239                                         $title = Title::newFromRedirectRecurse( $article->getContent() );
 240                                         # Redirects to missing titles are displayed, to hidden pages are followed
 241                                         # Copying observed behaviour from ?action=view
 242                                         if ( $title->exists() ) {
 243                                                 if ($title->userCanRead() ) {
 244                                                         $article = new Article( $title );
 245                                                 } else {
 246                                                         return "";
 247                                                 }
 248                                         }
 249                                 }
 250                                 $parserOptions = ParserOptions::newFromUser( $wgUser );
 251                                 return $wgParser->getPreloadText( $article->getContent(), $title, $parserOptions );
 252                         }
 253                 }
 254                 return '';
 255         }
 256
 257         /*
 258          * Check if a page was deleted while the user was editing it, before submit.
 259          * Note that we rely on the logging table, which hasn't been always there,
 260          * but that doesn't matter, because this only applies to brand new
 261          * deletes.
 262          */
 263         protected function wasDeletedSinceLastEdit() {
 264                 if ( $this->deletedSinceEdit )
 265                         return true;
 266                 if ( $this->mTitle->isDeletedQuick() ) {
 267                         $this->lastDelete = $this->getLastDelete();
 268                         if ( $this->lastDelete ) {
 269                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 270                                 if ( $deleteTime > $this->starttime ) {
 271                                         $this->deletedSinceEdit = true;
 272                                 }
 273                         }
 274                 }
 275                 return $this->deletedSinceEdit;
 276         }
 277
 278         function submit() {
 279                 $this->edit();
 280         }
 281
 282         /**
 283          * This is the function that gets called for "action=edit". It
 284          * sets up various member variables, then passes execution to
 285          * another function, usually showEditForm()
 286          *
 287          * The edit form is self-submitting, so that when things like
 288          * preview and edit conflicts occur, we get the same form back
 289          * with the extra stuff added.  Only when the final submission
 290          * is made and all is well do we actually save and redirect to
 291          * the newly-edited page.
 292          */
 293         function edit() {
 294                 global $wgOut, $wgRequest, $wgUser;
 295                 // Allow extensions to modify/prevent this form or submission
 296                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 297                         return;
 298                 }
 299
 300                 wfProfileIn( __METHOD__ );
 301                 wfDebug( __METHOD__.": enter\n" );
 302
 303                 // This is not an article
 304                 $wgOut->setArticleFlag( false );
 305
 306                 $this->importFormData( $wgRequest );
 307                 $this->firsttime = false;
 308
 309                 if ( $this->live ) {
 310                         $this->livePreview();
 311                         wfProfileOut( __METHOD__ );
 312                         return;
 313                 }
 314
 315                 if ( wfReadOnly() && $this->save ) {
 316                         // Force preview
 317                         $this->save = false;
 318                         $this->preview = true;
 319                 }
 320
 321                 $wgOut->addScriptFile( 'edit.js' );
 322
 323                 if ( $wgUser->getOption( 'uselivepreview', false ) ) {
 324                         $wgOut->includeJQuery();
 325                         $wgOut->addScriptFile( 'preview.js' );
 326                 }
 327                 // Bug #19334: textarea jumps when editing articles in IE8
 328                 $wgOut->addStyle( 'common/IE80Fixes.css', 'screen', 'IE 8' );
 329
 330                 $permErrors = $this->getEditPermissionErrors();
 331                 if ( $permErrors ) {
 332                         wfDebug( __METHOD__ . ": User can't edit\n" );
 333                         $this->readOnlyPage( $this->getContent( false ), true, $permErrors, 'edit' );
 334                         wfProfileOut( __METHOD__ );
 335                         return;
 336                 } else {
 337                         if ( $this->save ) {
 338                                 $this->formtype = 'save';
 339                         } else if ( $this->preview ) {
 340                                 $this->formtype = 'preview';
 341                         } else if ( $this->diff ) {
 342                                 $this->formtype = 'diff';
 343                         } else { # First time through
 344                                 $this->firsttime = true;
 345                                 if ( $this->previewOnOpen() ) {
 346                                         $this->formtype = 'preview';
 347                                 } else {
 348                                         $this->formtype = 'initial';
 349                                 }
 350                         }
 351                 }
 352
 353                 // If they used redlink=1 and the page exists, redirect to the main article
 354                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 355                         $wgOut->redirect( $this->mTitle->getFullURL() );
 356                 }
 357
 358                 wfProfileIn( __METHOD__."-business-end" );
 359
 360                 $this->isConflict = false;
 361                 // css / js subpages of user pages get a special treatment
 362                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 363                 $this->isCssSubpage        = $this->mTitle->isCssSubpage();
 364                 $this->isJsSubpage         = $this->mTitle->isJsSubpage();
 365                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 366
 367                 # Show applicable editing introductions
 368                 if ( $this->formtype == 'initial' || $this->firsttime )
 369                         $this->showIntro();
 370
 371                 if ( $this->mTitle->isTalkPage() ) {
 372                         $wgOut->addWikiMsg( 'talkpagetext' );
 373                 }
 374
 375                 # Optional notices on a per-namespace and per-page basis
 376                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 377                 if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
 378                         $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
 379                 }
 380                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 381                         $parts = explode( '/', $this->mTitle->getDBkey() );
 382                         $editnotice_base = $editnotice_ns;
 383                         while ( count( $parts ) > 0 ) {
 384                                 $editnotice_base .= '-'.array_shift( $parts );
 385                                 if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
 386                                         $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
 387                                 }
 388                         }
 389                 }
 390
 391                 # Attempt submission here.  This will check for edit conflicts,
 392                 # and redundantly check for locked database, blocked IPs, etc.
 393                 # that edit() already checked just in case someone tries to sneak
 394                 # in the back door with a hand-edited submission URL.
 395
 396                 if ( 'save' == $this->formtype ) {
 397                         if ( !$this->attemptSave() ) {
 398                                 wfProfileOut( __METHOD__."-business-end" );
 399                                 wfProfileOut( __METHOD__ );
 400                                 return;
 401                         }
 402                 }
 403
 404                 # First time through: get contents, set time for conflict
 405                 # checking, etc.
 406                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 407                         if ( $this->initialiseForm() === false ) {
 408                                 $this->noSuchSectionPage();
 409                                 wfProfileOut( __METHOD__."-business-end" );
 410                                 wfProfileOut( __METHOD__ );
 411                                 return;
 412                         }
 413                         if ( !$this->mTitle->getArticleId() )
 414                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 415                         else
 416                                 wfRunHooks( 'EditFormInitialText', array( $this ) );
 417                 }
 418
 419                 $this->showEditForm();
 420                 wfProfileOut( __METHOD__."-business-end" );
 421                 wfProfileOut( __METHOD__ );
 422         }
 423
 424         protected function getEditPermissionErrors() {
 425                 global $wgUser;
 426                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 427                 # Can this title be created?
 428                 if ( !$this->mTitle->exists() ) {
 429                         $permErrors = array_merge( $permErrors,
 430                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 431                 }
 432                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 433                 $remove = array();
 434                 foreach( $permErrors as $error ) {
 435                         if ( ( $this->preview || $this->diff ) &&
 436                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 437                         {
 438                                 $remove[] = $error;
 439                         }
 440                 }
 441                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 442                 return $permErrors;
 443         }
 444
 445         /**
 446          * Show a read-only error
 447          * Parameters are the same as OutputPage:readOnlyPage()
 448          * Redirect to the article page if redlink=1
 449          */
 450         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 451                 global $wgRequest, $wgOut;
 452                 if ( $wgRequest->getBool( 'redlink' ) ) {
 453                         // The edit page was reached via a red link.
 454                         // Redirect to the article page and let them click the edit tab if
 455                         // they really want a permission error.
 456                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 457                 } else {
 458                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 459                 }
 460         }
 461
 462         /**
 463          * Should we show a preview when the edit form is first shown?
 464          *
 465          * @return bool
 466          */
 467         protected function previewOnOpen() {
 468                 global $wgRequest, $wgUser, $wgPreviewOnOpenNamespaces;
 469                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 470                         // Explicit override from request
 471                         return true;
 472                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 473                         // Explicit override from request
 474                         return false;
 475                 } elseif ( $this->section == 'new' ) {
 476                         // Nothing *to* preview for new sections
 477                         return false;
 478                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 479                         // Standard preference behaviour
 480                         return true;
 481                 } elseif ( !$this->mTitle->exists() &&
 482                   isset($wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()]) &&
 483                   $wgPreviewOnOpenNamespaces[$this->mTitle->getNamespace()] )
 484                 {
 485                         // Categories are special
 486                         return true;
 487                 } else {
 488                         return false;
 489                 }
 490         }
 491
 492         /**
 493          * Does this EditPage class support section editing?
 494          * This is used by EditPage subclasses to indicate their ui cannot handle section edits
 495          *
 496          * @return bool
 497          */
 498         protected function isSectionEditSupported() {
 499                 return true;
 500         }
 501
 502         /**
 503          * Returns the URL to use in the form's action attribute.
 504          * This is used by EditPage subclasses when simply customizing the action
 505          * variable in the constructor is not enough. This can be used when the
 506          * EditPage lives inside of a Special page rather than a custom page action.
 507          *
 508          * @param $title Title object for which is being edited (where we go to for &action= links)
 509          * @return string
 510          */
 511         protected function getActionURL( Title $title ) {
 512                 return $title->getLocalURL( array( 'action' => $this->action ) );
 513         }
 514
 515         /**
 516          * @todo document
 517          * @param $request
 518          */
 519         function importFormData( &$request ) {
 520                 global $wgLang, $wgUser;
 521
 522                 wfProfileIn( __METHOD__ );
 523
 524                 # Section edit can come from either the form or a link
 525                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 526
 527                 if ( $request->wasPosted() ) {
 528                         # These fields need to be checked for encoding.
 529                         # Also remove trailing whitespace, but don't remove _initial_
 530                         # whitespace from the text boxes. This may be significant formatting.
 531                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 532                         if ( !$request->getCheck('wpTextbox2') ) {
 533                                 // Skip this if wpTextbox2 has input, it indicates that we came
 534                                 // from a conflict page with raw page text, not a custom form
 535                                 // modified by subclasses
 536                                 wfProfileIn( get_class($this)."::importContentFormData" );
 537                                 $textbox1 = $this->importContentFormData( $request );
 538                                 if ( isset($textbox1) )
 539                                         $this->textbox1 = $textbox1;
 540                                 wfProfileOut( get_class($this)."::importContentFormData" );
 541                         }
 542
 543                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 544                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250, '' );
 545
 546                         # Remove extra headings from summaries and new sections.
 547                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 548
 549                         $this->edittime = $request->getVal( 'wpEdittime' );
 550                         $this->starttime = $request->getVal( 'wpStarttime' );
 551
 552                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 553
 554                         if ( is_null( $this->edittime ) ) {
 555                                 # If the form is incomplete, force to preview.
 556                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 557                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 558                                 $this->preview = true;
 559                         } else {
 560                                 /* Fallback for live preview */
 561                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 562                                 $this->diff = $request->getCheck( 'wpDiff' );
 563
 564                                 // Remember whether a save was requested, so we can indicate
 565                                 // if we forced preview due to session failure.
 566                                 $this->mTriedSave = !$this->preview;
 567
 568                                 if ( $this->tokenOk( $request ) ) {
 569                                         # Some browsers will not report any submit button
 570                                         # if the user hits enter in the comment box.
 571                                         # The unmarked state will be assumed to be a save,
 572                                         # if the form seems otherwise complete.
 573                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 574                                 } else if ( $this->diff ) {
 575                                         # Failed token check, but only requested "Show Changes".
 576                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 577                                 } else {
 578                                         # Page might be a hack attempt posted from
 579                                         # an external site. Preview instead of saving.
 580                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 581                                         $this->preview = true;
 582                                 }
 583                         }
 584                         $this->save = !$this->preview && !$this->diff;
 585                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 586                                 $this->edittime = null;
 587                         }
 588
 589                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 590                                 $this->starttime = null;
 591                         }
 592
 593                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 594
 595                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 596                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 597
 598                         # Don't force edit summaries when a user is editing their own user or talk page
 599                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 600                                 $this->mTitle->getText() == $wgUser->getName() )
 601                         {
 602                                 $this->allowBlankSummary = true;
 603                         } else {
 604                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 605                         }
 606
 607                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 608                 } else {
 609                         # Not a posted form? Start with nothing.
 610                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 611                         $this->textbox1  = '';
 612                         $this->summary   = '';
 613                         $this->edittime  = '';
 614                         $this->starttime = wfTimestampNow();
 615                         $this->edit      = false;
 616                         $this->preview   = false;
 617                         $this->save      = false;
 618                         $this->diff      = false;
 619                         $this->minoredit = false;
 620                         $this->watchthis = $request->getBool( 'watchthis', false ); // Watch may be overriden by request parameters
 621                         $this->recreate  = false;
 622
 623                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 624                                 $this->summary = $request->getVal( 'preloadtitle' );
 625                         }
 626                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 627                                 $this->summary = $request->getText( 'summary' );
 628                         }
 629
 630                         if ( $request->getVal( 'minor' ) ) {
 631                                 $this->minoredit = true;
 632                         }
 633                 }
 634
 635                 $this->bot = $request->getBool( 'bot', true );
 636                 $this->nosummary = $request->getBool( 'nosummary' );
 637
 638                 // FIXME: unused variable?
 639                 $this->oldid = $request->getInt( 'oldid' );
 640
 641                 $this->live = $request->getCheck( 'live' );
 642                 $this->editintro = $request->getText( 'editintro',
 643                         // Custom edit intro for new sections
 644                         $this->section === 'new' ? 'MediaWiki:addsection-editintro' : '' );
 645
 646                 wfProfileOut( __METHOD__ );
 647
 648                 // Allow extensions to modify form data
 649                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 650         }
 651
 652         /**
 653          * Subpage overridable method for extracting the page content data from the
 654          * posted form to be placed in $this->textbox1, if using customized input
 655          * this method should be overrided and return the page text that will be used
 656          * for saving, preview parsing and so on...
 657          *
 658          * @param $request WebRequest
 659          */
 660         protected function importContentFormData( &$request ) {
 661                 return; // Don't do anything, EditPage already extracted wpTextbox1
 662         }
 663
 664         /**
 665          * Make sure the form isn't faking a user's credentials.
 666          *
 667          * @param $request WebRequest
 668          * @return bool
 669          * @private
 670          */
 671         function tokenOk( &$request ) {
 672                 global $wgUser;
 673                 $token = $request->getVal( 'wpEditToken' );
 674                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 675                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 676                 return $this->mTokenOk;
 677         }
 678
 679         /**
 680          * Show all applicable editing introductions
 681          */
 682         protected function showIntro() {
 683                 global $wgOut, $wgUser;
 684                 if ( $this->suppressIntro ) {
 685                         return;
 686                 }
 687
 688                 $namespace = $this->mTitle->getNamespace();
 689
 690                 if ( $namespace == NS_MEDIAWIKI ) {
 691                         # Show a warning if editing an interface message
 692                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1\n</div>", 'editinginterface' );
 693                 }
 694
 695                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exist
 696                 # Show log extract when the user is currently blocked
 697                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 698                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 699                         $username = $parts[0];
 700                         $user = User::newFromName( $username, false /* allow IP users*/ );
 701                         $ip = User::isIP( $username );
 702                         if ( !$user->isLoggedIn() && !$ip ) { # User does not exist
 703                                 $wgOut->wrapWikiMsg( "<div class=\"mw-userpage-userdoesnotexist error\">\n$1\n</div>",
 704                                         array( 'userpage-userdoesnotexist', $username ) );
 705                         } else if ( $user->isBlocked() ) { # Show log extract if the user is currently blocked
 706                                 LogEventsList::showLogExtract(
 707                                         $wgOut,
 708                                         'block',
 709                                         $user->getUserPage()->getPrefixedText(),
 710                                         '',
 711                                         array(
 712                                                 'lim' => 1,
 713                                                 'showIfEmpty' => false,
 714                                                 'msgKey' => array(
 715                                                         'blocked-notice-logextract',
 716                                                         $user->getName() # Support GENDER in notice
 717                                                 )
 718                                         )
 719                                 );
 720                         }
 721                 }
 722                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 723                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 724                         if ( $wgUser->isLoggedIn() ) {
 725                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletext\">\n$1\n</div>", 'newarticletext' );
 726                         } else {
 727                                 $wgOut->wrapWikiMsg( "<div class=\"mw-newarticletextanon\">\n$1\n</div>", 'newarticletextanon' );
 728                         }
 729                 }
 730                 # Give a notice if the user is editing a deleted/moved page...
 731                 if ( !$this->mTitle->exists() ) {
 732                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle->getPrefixedText(),
 733                                 '', array( 'lim' => 10,
 734                                            'conds' => array( "log_action != 'revision'" ),
 735                                            'showIfEmpty' => false,
 736                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
 737                         );
 738                 }
 739         }
 740
 741         /**
 742          * Attempt to show a custom editing introduction, if supplied
 743          *
 744          * @return bool
 745          */
 746         protected function showCustomIntro() {
 747                 if ( $this->editintro ) {
 748                         $title = Title::newFromText( $this->editintro );
 749                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 750                                 global $wgOut;
 751                                 $revision = Revision::newFromTitle( $title );
 752                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 753                                 return true;
 754                         } else {
 755                                 return false;
 756                         }
 757                 } else {
 758                         return false;
 759                 }
 760         }
 761
 762         /**
 763          * Attempt submission (no UI)
 764          * @return one of the constants describing the result
 765          */
 766         function internalAttemptSave( &$result, $bot = false ) {
 767                 global $wgFilterCallback, $wgUser, $wgParser;
 768                 global $wgMaxArticleSize;
 769
 770                 wfProfileIn( __METHOD__  );
 771                 wfProfileIn( __METHOD__ . '-checks' );
 772
 773                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) ) {
 774                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 775                         return self::AS_HOOK_ERROR;
 776                 }
 777
 778                 # Check image redirect
 779                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 780                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 781                         !$wgUser->isAllowed( 'upload' ) ) {
 782                                 if ( $wgUser->isAnon() ) {
 783                                         return self::AS_IMAGE_REDIRECT_ANON;
 784                                 } else {
 785                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 786                                 }
 787                 }
 788
 789                 # Check for spam
 790                 $match = self::matchSummarySpamRegex( $this->summary );
 791                 if ( $match === false ) {
 792                         $match = self::matchSpamRegex( $this->textbox1 );
 793                 }
 794                 if ( $match !== false ) {
 795                         $result['spam'] = $match;
 796                         $ip = wfGetIP();
 797                         $pdbk = $this->mTitle->getPrefixedDBkey();
 798                         $match = str_replace( "\n", '', $match );
 799                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 800                         wfProfileOut( __METHOD__ . '-checks' );
 801                         wfProfileOut( __METHOD__ );
 802                         return self::AS_SPAM_ERROR;
 803                 }
 804                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 805                         # Error messages or other handling should be performed by the filter function
 806                         wfProfileOut( __METHOD__ . '-checks' );
 807                         wfProfileOut( __METHOD__ );
 808                         return self::AS_FILTERING;
 809                 }
 810                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 811                         # Error messages etc. could be handled within the hook...
 812                         wfProfileOut( __METHOD__ . '-checks' );
 813                         wfProfileOut( __METHOD__ );
 814                         return self::AS_HOOK_ERROR;
 815                 } elseif ( $this->hookError != '' ) {
 816                         # ...or the hook could be expecting us to produce an error
 817                         wfProfileOut( __METHOD__ . '-checks' );
 818                         wfProfileOut( __METHOD__ );
 819                         return self::AS_HOOK_ERROR_EXPECTED;
 820                 }
 821                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 822                         # Check block state against master, thus 'false'.
 823                         wfProfileOut( __METHOD__ . '-checks' );
 824                         wfProfileOut( __METHOD__ );
 825                         return self::AS_BLOCKED_PAGE_FOR_USER;
 826                 }
 827                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
 828                 if ( $this->kblength > $wgMaxArticleSize ) {
 829                         // Error will be displayed by showEditForm()
 830                         $this->tooBig = true;
 831                         wfProfileOut( __METHOD__ . '-checks' );
 832                         wfProfileOut( __METHOD__ );
 833                         return self::AS_CONTENT_TOO_BIG;
 834                 }
 835
 836                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 837                         if ( $wgUser->isAnon() ) {
 838                                 wfProfileOut( __METHOD__ . '-checks' );
 839                                 wfProfileOut( __METHOD__ );
 840                                 return self::AS_READ_ONLY_PAGE_ANON;
 841                         } else {
 842                                 wfProfileOut( __METHOD__ . '-checks' );
 843                                 wfProfileOut( __METHOD__ );
 844                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 845                         }
 846                 }
 847
 848                 if ( wfReadOnly() ) {
 849                         wfProfileOut( __METHOD__ . '-checks' );
 850                         wfProfileOut( __METHOD__ );
 851                         return self::AS_READ_ONLY_PAGE;
 852                 }
 853                 if ( $wgUser->pingLimiter() ) {
 854                         wfProfileOut( __METHOD__ . '-checks' );
 855                         wfProfileOut( __METHOD__ );
 856                         return self::AS_RATE_LIMITED;
 857                 }
 858
 859                 # If the article has been deleted while editing, don't save it without
 860                 # confirmation
 861                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 862                         wfProfileOut( __METHOD__ . '-checks' );
 863                         wfProfileOut( __METHOD__ );
 864                         return self::AS_ARTICLE_WAS_DELETED;
 865                 }
 866
 867                 wfProfileOut( __METHOD__ . '-checks' );
 868
 869                 # If article is new, insert it.
 870                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 871                 if ( 0 == $aid ) {
 872                         // Late check for create permission, just in case *PARANOIA*
 873                         if ( !$this->mTitle->userCan( 'create' ) ) {
 874                                 wfDebug( __METHOD__ . ": no create permission\n" );
 875                                 wfProfileOut( __METHOD__ );
 876                                 return self::AS_NO_CREATE_PERMISSION;
 877                         }
 878
 879                         # Don't save a new article if it's blank.
 880                         if ( $this->textbox1 == '' ) {
 881                                 wfProfileOut( __METHOD__ );
 882                                 return self::AS_BLANK_ARTICLE;
 883                         }
 884
 885                         // Run post-section-merge edit filter
 886                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 887                                 # Error messages etc. could be handled within the hook...
 888                                 wfProfileOut( __METHOD__ );
 889                                 return self::AS_HOOK_ERROR;
 890                         } elseif ( $this->hookError != '' ) {
 891                                 # ...or the hook could be expecting us to produce an error
 892                                 wfProfileOut( __METHOD__ );
 893                                 return self::AS_HOOK_ERROR_EXPECTED;
 894                         }
 895
 896                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 897                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 898                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 899                                         $this->missingSummary = true;
 900                                         wfProfileOut( __METHOD__ );
 901                                         return self::AS_SUMMARY_NEEDED;
 902                                 }
 903                         }
 904
 905                         $isComment = ( $this->section == 'new' );
 906
 907                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 908                                 $this->minoredit, $this->watchthis, false, $isComment, $bot );
 909
 910                         wfProfileOut( __METHOD__ );
 911                         return self::AS_SUCCESS_NEW_ARTICLE;
 912                 }
 913
 914                 # Article exists. Check for edit conflict.
 915
 916                 $this->mArticle->clear(); # Force reload of dates, etc.
 917                 $this->mArticle->forUpdate( true ); # Lock the article
 918
 919                 wfDebug( "timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n" );
 920
 921                 if ( $this->mArticle->getTimestamp() != $this->edittime ) {
 922                         $this->isConflict = true;
 923                         if ( $this->section == 'new' ) {
 924                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
 925                                         $this->mArticle->getComment() == $this->summary ) {
 926                                         // Probably a duplicate submission of a new comment.
 927                                         // This can happen when squid resends a request after
 928                                         // a timeout but the first one actually went through.
 929                                         wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
 930                                 } else {
 931                                         // New comment; suppress conflict.
 932                                         $this->isConflict = false;
 933                                         wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
 934                                 }
 935                         }
 936                 }
 937                 $userid = $wgUser->getId();
 938
 939                 # Suppress edit conflict with self, except for section edits where merging is required.
 940                 if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit( $userid, $this->edittime ) ) {
 941                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
 942                         $this->isConflict = false;
 943                 }
 944
 945                 if ( $this->isConflict ) {
 946                         wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 947                                 $this->mArticle->getTimestamp() . "')\n" );
 948                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
 949                 } else {
 950                         wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
 951                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
 952                 }
 953                 if ( is_null( $text ) ) {
 954                         wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
 955                         $this->isConflict = true;
 956                         $text = $this->textbox1; // do not try to merge here!
 957                 } else if ( $this->isConflict ) {
 958                         # Attempt merge
 959                         if ( $this->mergeChangesInto( $text ) ) {
 960                                 // Successful merge! Maybe we should tell the user the good news?
 961                                 $this->isConflict = false;
 962                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
 963                         } else {
 964                                 $this->section = '';
 965                                 $this->textbox1 = $text;
 966                                 wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
 967                         }
 968                 }
 969
 970                 if ( $this->isConflict ) {
 971                         wfProfileOut( __METHOD__ );
 972                         return self::AS_CONFLICT_DETECTED;
 973                 }
 974
 975                 $oldtext = $this->mArticle->getContent();
 976
 977                 // Run post-section-merge edit filter
 978                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 979                         # Error messages etc. could be handled within the hook...
 980                         wfProfileOut( __METHOD__ );
 981                         return self::AS_HOOK_ERROR;
 982                 } elseif ( $this->hookError != '' ) {
 983                         # ...or the hook could be expecting us to produce an error
 984                         wfProfileOut( __METHOD__ );
 985                         return self::AS_HOOK_ERROR_EXPECTED;
 986                 }
 987
 988                 # Handle the user preference to force summaries here, but not for null edits
 989                 if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp( $oldtext, $text )
 990                         && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
 991                 {
 992                         if ( md5( $this->summary ) == $this->autoSumm ) {
 993                                 $this->missingSummary = true;
 994                                 wfProfileOut( __METHOD__ );
 995                                 return self::AS_SUMMARY_NEEDED;
 996                         }
 997                 }
 998
 999                 # And a similar thing for new sections
1000                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1001                         if ( trim( $this->summary ) == '' ) {
1002                                 $this->missingSummary = true;
1003                                 wfProfileOut( __METHOD__ );
1004                                 return self::AS_SUMMARY_NEEDED;
1005                         }
1006                 }
1007
1008                 # All's well
1009                 wfProfileIn( __METHOD__ . '-sectionanchor' );
1010                 $sectionanchor = '';
1011                 if ( $this->section == 'new' ) {
1012                         if ( $this->textbox1 == '' ) {
1013                                 $this->missingComment = true;
1014                                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1015                                 wfProfileOut( __METHOD__ );
1016                                 return self::AS_TEXTBOX_EMPTY;
1017                         }
1018                         if ( $this->summary != '' ) {
1019                                 $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $this->summary );
1020                                 # This is a new section, so create a link to the new section
1021                                 # in the revision summary.
1022                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1023                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1024                         }
1025                 } elseif ( $this->section != '' ) {
1026                         # Try to get a section anchor from the section source, redirect to edited section if header found
1027                         # XXX: might be better to integrate this into Article::replaceSection
1028                         # for duplicate heading checking and maybe parsing
1029                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1030                         # we can't deal with anchors, includes, html etc in the header for now,
1031                         # headline would need to be parsed to improve this
1032                         if ( $hasmatch and strlen( $matches[2] ) > 0 ) {
1033                                 $sectionanchor = $wgParser->guessLegacySectionNameFromWikiText( $matches[2] );
1034                         }
1035                 }
1036                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1037
1038                 // Save errors may fall down to the edit form, but we've now
1039                 // merged the section into full text. Clear the section field
1040                 // so that later submission of conflict forms won't try to
1041                 // replace that into a duplicated mess.
1042                 $this->textbox1 = $text;
1043                 $this->section = '';
1044
1045                 // Check for length errors again now that the section is merged in
1046                 $this->kblength = (int)( strlen( $text ) / 1024 );
1047                 if ( $this->kblength > $wgMaxArticleSize ) {
1048                         $this->tooBig = true;
1049                         wfProfileOut( __METHOD__ );
1050                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1051                 }
1052
1053                 # update the article here
1054                 if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
1055                         $this->watchthis, $bot, $sectionanchor ) )
1056                 {
1057                         wfProfileOut( __METHOD__ );
1058                         return self::AS_SUCCESS_UPDATE;
1059                 } else {
1060                         $this->isConflict = true;
1061                 }
1062                 wfProfileOut( __METHOD__ );
1063                 return self::AS_END;
1064         }
1065
1066         /**
1067          * Check if no edits were made by other users since
1068          * the time a user started editing the page. Limit to
1069          * 50 revisions for the sake of performance.
1070          */
1071         protected function userWasLastToEdit( $id, $edittime ) {
1072                 if( !$id ) return false;
1073                 $dbw = wfGetDB( DB_MASTER );
1074                 $res = $dbw->select( 'revision',
1075                         'rev_user',
1076                         array(
1077                                 'rev_page' => $this->mArticle->getId(),
1078                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1079                         ),
1080                         __METHOD__,
1081                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1082                 while( $row = $res->fetchObject() ) {
1083                         if( $row->rev_user != $id ) {
1084                                 return false;
1085                         }
1086                 }
1087                 return true;
1088         }
1089
1090         /**
1091          * Check given input text against $wgSpamRegex, and return the text of the first match.
1092          * @return mixed -- matching string or false
1093          */
1094         public static function matchSpamRegex( $text ) {
1095                 global $wgSpamRegex;
1096                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1097                 $regexes = (array)$wgSpamRegex;
1098                 return self::matchSpamRegexInternal( $text, $regexes );
1099         }
1100
1101         /**
1102          * Check given input text against $wgSpamRegex, and return the text of the first match.
1103          * @return mixed -- matching string or false
1104          */
1105         public static function matchSummarySpamRegex( $text ) {
1106                 global $wgSummarySpamRegex;
1107                 $regexes = (array)$wgSummarySpamRegex;
1108                 return self::matchSpamRegexInternal( $text, $regexes );
1109         }
1110
1111         protected static function matchSpamRegexInternal( $text, $regexes ) {
1112                 foreach( $regexes as $regex ) {
1113                         $matches = array();
1114                         if( preg_match( $regex, $text, $matches ) ) {
1115                                 return $matches[0];
1116                         }
1117                 }
1118                 return false;
1119         }
1120
1121         /**
1122          * Initialise form fields in the object
1123          * Called on the first invocation, e.g. when a user clicks an edit link
1124          * @returns bool -- if the requested section is valid
1125          */
1126         function initialiseForm() {
1127                 global $wgUser;
1128                 $this->edittime = $this->mArticle->getTimestamp();
1129                 $this->textbox1 = $this->getContent( false );
1130                 // activate checkboxes if user wants them to be always active
1131                 # Sort out the "watch" checkbox
1132                 if ( $wgUser->getOption( 'watchdefault' ) ) {
1133                         # Watch all edits
1134                         $this->watchthis = true;
1135                 } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1136                         # Watch creations
1137                         $this->watchthis = true;
1138                 } elseif ( $this->mTitle->userIsWatching() ) {
1139                         # Already watched
1140                         $this->watchthis = true;
1141                 }
1142                 if ( $this->textbox1 === false ) return false;
1143                 wfProxyCheck();
1144                 return true;
1145         }
1146
1147         function setHeaders() {
1148                 global $wgOut, $wgTitle;
1149                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1150                 if ( $this->formtype == 'preview' ) {
1151                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1152                 }
1153                 if ( $this->isConflict ) {
1154                         $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
1155                 } elseif ( $this->section != '' ) {
1156                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1157                         $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
1158                 } else {
1159                         # Use the title defined by DISPLAYTITLE magic word when present
1160                         if ( isset( $this->mParserOutput )
1161                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1162                                 $title = $dt;
1163                         } else {
1164                                 $title = $wgTitle->getPrefixedText();
1165                         }
1166                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1167                 }
1168         }
1169
1170         /**
1171          * Send the edit form and related headers to $wgOut
1172          * @param $formCallback Optional callable that takes an OutputPage
1173          *                      parameter; will be called during form output
1174          *                      near the top, for captchas and the like.
1175          */
1176         function showEditForm( $formCallback=null ) {
1177                 global $wgOut, $wgUser, $wgTitle;
1178
1179                 # If $wgTitle is null, that means we're in API mode.
1180                 # Some hook probably called this function  without checking
1181                 # for is_null($wgTitle) first. Bail out right here so we don't
1182                 # do lots of work just to discard it right after.
1183                 if ( is_null( $wgTitle ) )
1184                         return;
1185
1186                 wfProfileIn( __METHOD__ );
1187
1188                 $sk = $wgUser->getSkin();
1189
1190                 #need to parse the preview early so that we know which templates are used,
1191                 #otherwise users with "show preview after edit box" will get a blank list
1192                 #we parse this near the beginning so that setHeaders can do the title
1193                 #setting work instead of leaving it in getPreviewText
1194                 $previewOutput = '';
1195                 if ( $this->formtype == 'preview' ) {
1196                         $previewOutput = $this->getPreviewText();
1197                 }
1198
1199                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1200
1201                 $this->setHeaders();
1202
1203                 # Enabled article-related sidebar, toplinks, etc.
1204                 $wgOut->setArticleRelated( true );
1205
1206                 if ( $this->showHeader() === false )
1207                         return;
1208
1209                 $action = htmlspecialchars($this->getActionURL($wgTitle));
1210
1211                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1212                         # prepare toolbar for edit buttons
1213                         $toolbar = EditPage::getEditToolbar();
1214                 } else {
1215                         $toolbar = '';
1216                 }
1217
1218
1219                 $wgOut->addHTML( $this->editFormPageTop );
1220
1221                 if ( $wgUser->getOption( 'previewontop' ) ) {
1222                         $this->displayPreviewArea( $previewOutput, true );
1223                 }
1224
1225                 $wgOut->addHTML( $this->editFormTextTop );
1226
1227                 $templates = $this->getTemplates();
1228                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1229
1230                 $hiddencats = $this->mArticle->getHiddenCategories();
1231                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1232
1233                 if ( $this->wasDeletedSinceLastEdit() && 'save' != $this->formtype ) {
1234                         $wgOut->wrapWikiMsg(
1235                                 "<div class='error mw-deleted-while-editing'>\n$1\n</div>",
1236                                 'deletedwhileediting' );
1237                 } elseif ( $this->wasDeletedSinceLastEdit() ) {
1238                         // Hide the toolbar and edit area, user can click preview to get it back
1239                         // Add an confirmation checkbox and explanation.
1240                         $toolbar = '';
1241                         // @todo move this to a cleaner conditional instead of blanking a variable
1242                 }
1243                 $wgOut->addHTML( <<<HTML
1244 {$toolbar}
1245 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1246 HTML
1247 );
1248
1249                 if ( is_callable( $formCallback ) ) {
1250                         call_user_func_array( $formCallback, array( &$wgOut ) );
1251                 }
1252
1253                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1254
1255                 // Put these up at the top to ensure they aren't lost on early form submission
1256                 $this->showFormBeforeText();
1257
1258                 if ( $this->wasDeletedSinceLastEdit() && 'save' == $this->formtype ) {
1259                         $wgOut->addHTML(
1260                                 '<div class="mw-confirm-recreate">' .
1261                                 $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ) ) .
1262                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1263                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1264                                 ) .
1265                                 '</div>'
1266                         );
1267                 }
1268
1269                 # If a blank edit summary was previously provided, and the appropriate
1270                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1271                 # user being bounced back more than once in the event that a summary
1272                 # is not required.
1273                 #####
1274                 # For a bit more sophisticated detection of blank summaries, hash the
1275                 # automatic one and pass that in the hidden field wpAutoSummary.
1276                 if ( $this->missingSummary ||
1277                         ( $this->section == 'new' && $this->nosummary ) )
1278                                 $wgOut->addHTML( Xml::hidden( 'wpIgnoreBlankSummary', true ) );
1279                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1280                 $wgOut->addHTML( Xml::hidden( 'wpAutoSummary', $autosumm ) );
1281
1282                 $wgOut->addHTML( Xml::hidden( 'oldid', $this->mArticle->getOldID() ) );
1283
1284                 if ( $this->section == 'new' ) {
1285                         $this->showSummaryInput( true, $this->summary );
1286                         $wgOut->addHTML( $this->getSummaryPreview( true, $this->summary ) );
1287                 }
1288
1289                 $wgOut->addHTML( $this->editFormTextBeforeContent );
1290
1291                 if ( $this->isConflict ) {
1292                         // In an edit conflict bypass the overrideable content form method
1293                         // and fallback to the raw wpTextbox1 since editconflicts can't be
1294                         // resolved between page source edits and custom ui edits using the
1295                         // custom edit ui.
1296                         $this->showTextbox1( null, $this->getContent() );
1297                 } else {
1298                         $this->showContentForm();
1299                 }
1300
1301                 $wgOut->addHTML( $this->editFormTextAfterContent );
1302
1303                 $wgOut->addWikiText( $this->getCopywarn() );
1304                 if ( isset($this->editFormTextAfterWarn) && $this->editFormTextAfterWarn !== '' )
1305                         $wgOut->addHTML( $this->editFormTextAfterWarn );
1306
1307                 $this->showStandardInputs();
1308
1309                 $this->showFormAfterText();
1310
1311                 $this->showTosSummary();
1312                 $this->showEditTools();
1313
1314                 $wgOut->addHTML( <<<HTML
1315 {$this->editFormTextAfterTools}
1316 <div class='templatesUsed'>
1317 {$formattedtemplates}
1318 </div>
1319 <div class='hiddencats'>
1320 {$formattedhiddencats}
1321 </div>
1322 HTML
1323 );
1324
1325                 if ( $this->isConflict )
1326                         $this->showConflict();
1327
1328                 $wgOut->addHTML( $this->editFormTextBottom );
1329                 $wgOut->addHTML( "</form>\n" );
1330                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1331                         $this->displayPreviewArea( $previewOutput, false );
1332                 }
1333
1334                 wfProfileOut( __METHOD__ );
1335         }
1336
1337         protected function showHeader() {
1338                 global $wgOut, $wgUser, $wgTitle, $wgMaxArticleSize, $wgLang;
1339                 if ( $this->isConflict ) {
1340                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1\n</div>", 'explainconflict' );
1341                         $this->edittime = $this->mArticle->getTimestamp();
1342                 } else {
1343                         if ( $this->section != '' && !$this->isSectionEditSupported() ) {
1344                                 // We use $this->section to much before this and getVal('wgSection') directly in other places
1345                                 // at this point we can't reset $this->section to '' to fallback to non-section editing.
1346                                 // Someone is welcome to try refactoring though
1347                                 $wgOut->showErrorPage( 'sectioneditnotsupported-title', 'sectioneditnotsupported-text' );
1348                                 return false;
1349                         }
1350
1351                         if ( $this->section != '' && $this->section != 'new' ) {
1352                                 $matches = array();
1353                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1354                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1355                                         if ( !empty( $matches[2] ) ) {
1356                                                 global $wgParser;
1357                                                 $this->summary = "/* " .
1358                                                         $wgParser->stripSectionName(trim($matches[2])) .
1359                                                         " */ ";
1360                                         }
1361                                 }
1362                         }
1363
1364                         if ( $this->missingComment ) {
1365                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommenttext'>\n$1\n</div>", 'missingcommenttext' );
1366                         }
1367
1368                         if ( $this->missingSummary && $this->section != 'new' ) {
1369                                 $wgOut->wrapWikiMsg( "<div id='mw-missingsummary'>\n$1\n</div>", 'missingsummary' );
1370                         }
1371
1372                         if ( $this->missingSummary && $this->section == 'new' ) {
1373                                 $wgOut->wrapWikiMsg( "<div id='mw-missingcommentheader'>\n$1\n</div>", 'missingcommentheader' );
1374                         }
1375
1376                         if ( $this->hookError !== '' ) {
1377                                 $wgOut->addWikiText( $this->hookError );
1378                         }
1379
1380                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1381                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1382                         }
1383
1384                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1385                         // Let sysop know that this will make private content public if saved
1386
1387                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1388                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
1389                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1390                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
1391                                 }
1392
1393                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1394                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1395                                         $wgOut->addWikiMsg( 'editingold' );
1396                                 }
1397                         }
1398                 }
1399
1400                 if ( wfReadOnly() ) {
1401                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1402                 } elseif ( $wgUser->isAnon() ) {
1403                         if ( $this->formtype != 'preview' ) {
1404                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-edit-warning\">\n$1</div>", 'anoneditwarning' );
1405                         } else {
1406                                 $wgOut->wrapWikiMsg( "<div id=\"mw-anon-preview-warning\">\n$1</div>", 'anonpreviewwarning' );
1407                         }
1408                 } else {
1409                         if ( $this->isCssJsSubpage ) {
1410                                 # Check the skin exists
1411                                 if ( !$this->isValidCssJsSubpage ) {
1412                                         $wgOut->wrapWikiMsg( "<div class='error' id='mw-userinvalidcssjstitle'>\n$1\n</div>", array( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() ) );
1413                                 }
1414                                 if ( $this->formtype !== 'preview' ) {
1415                                         if ( $this->isCssSubpage )
1416                                                 $wgOut->wrapWikiMsg( "<div id='mw-usercssyoucanpreview'>\n$1\n</div>", array( 'usercssyoucanpreview' ) );
1417                                         if ( $this->isJsSubpage )
1418                                                 $wgOut->wrapWikiMsg( "<div id='mw-userjsyoucanpreview'>\n$1\n</div>", array( 'userjsyoucanpreview' ) );
1419                                 }
1420                         }
1421                 }
1422
1423                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1424                         # Is the title semi-protected?
1425                         if ( $this->mTitle->isSemiProtected() ) {
1426                                 $noticeMsg = 'semiprotectedpagewarning';
1427                         } else {
1428                                 # Then it must be protected based on static groups (regular)
1429                                 $noticeMsg = 'protectedpagewarning';
1430                         }
1431                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1432                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1433                 }
1434                 if ( $this->mTitle->isCascadeProtected() ) {
1435                         # Is this page under cascading protection from some source pages?
1436                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1437                         $notice = "<div class='mw-cascadeprotectedwarning'>\n$1\n";
1438                         $cascadeSourcesCount = count( $cascadeSources );
1439                         if ( $cascadeSourcesCount > 0 ) {
1440                                 # Explain, and list the titles responsible
1441                                 foreach( $cascadeSources as $page ) {
1442                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1443                                 }
1444                         }
1445                         $notice .= '</div>';
1446                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1447                 }
1448                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1449                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1450                                 array(  'lim' => 1,
1451                                         'showIfEmpty' => false,
1452                                         'msgKey' => array( 'titleprotectedwarning' ),
1453                                         'wrap' => "<div class=\"mw-titleprotectedwarning\">\n$1</div>" ) );
1454                 }
1455
1456                 if ( $this->kblength === false ) {
1457                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1458                 }
1459
1460                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1461                         $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
1462                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1463                         $wgOut->addHTML( "</div>\n" );
1464                 } elseif ( $this->kblength > 29 ) {
1465                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1466                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1467                         $wgOut->addHTML( "</div>\n" );
1468                 }
1469         }
1470
1471         /**
1472          * Standard summary input and label (wgSummary), abstracted so EditPage
1473          * subclasses may reorganize the form.
1474          * Note that you do not need to worry about the label's for=, it will be
1475          * inferred by the id given to the input. You can remove them both by
1476          * passing array( 'id' => false ) to $userInputAttrs.
1477          *
1478          * @param $summary The value of the summary input
1479          * @param $labelText The html to place inside the label
1480          * @param $inputAttrs An array of attrs to use on the input
1481          * @param $spanLabelAttrs An array of attrs to use on the span inside the label
1482          *
1483          * @return array An array in the format array( $label, $input )
1484          */
1485         function getSummaryInput($summary = "", $labelText = null, $inputAttrs = null, $spanLabelAttrs = null) {
1486                 global $wgUser;
1487                 //Note: the maxlength is overriden in JS to 250 and to make it use UTF-8 bytes, not characters.
1488                 $inputAttrs = ( is_array($inputAttrs) ? $inputAttrs : array() ) + array(
1489                         'id' => 'wpSummary',
1490                         'maxlength' => '200',
1491                         'tabindex' => '1',
1492                         'size' => 60,
1493                         'spellcheck' => 'true',
1494                 ) + $wgUser->getSkin()->tooltipAndAccessKeyAttribs( 'summary' );
1495
1496                 $spanLabelAttrs = ( is_array($spanLabelAttrs) ? $spanLabelAttrs : array() ) + array(
1497                         'class' => $this->missingSummary ? 'mw-summarymissed' : 'mw-summary',
1498                         'id' => "wpSummaryLabel"
1499                 );
1500
1501                 $label = null;
1502                 if ( $labelText ) {
1503                         $label = Xml::tags( 'label', $inputAttrs['id'] ? array( 'for' => $inputAttrs['id'] ) : null, $labelText );
1504                         $label = Xml::tags( 'span', $spanLabelAttrs, $label );
1505                 }
1506
1507                 $input = Html::input( 'wpSummary', $summary, 'text', $inputAttrs );
1508
1509                 return array( $label, $input );
1510         }
1511
1512         /**
1513          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1514          *                          up top, or false if this is the comment summary
1515          *                          down below the textarea
1516          * @param $summary String: The text of the summary to display
1517          * @return String
1518          */
1519         protected function showSummaryInput( $isSubjectPreview, $summary = "" ) {
1520                 global $wgOut, $wgContLang;
1521                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1522                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1523                 if ( $isSubjectPreview ) {
1524                         if ( $this->nosummary )
1525                                 return;
1526                 } else {
1527                         if ( !$this->mShowSummaryField )
1528                                 return;
1529                 }
1530                 $summary = $wgContLang->recodeForEdit( $summary );
1531                 $labelText = wfMsgExt( $isSubjectPreview ? 'subject' : 'summary', 'parseinline' );
1532                 list($label, $input) = $this->getSummaryInput($summary, $labelText, array( 'class' => $summaryClass ), array());
1533                 $wgOut->addHTML("{$label} {$input}");
1534         }
1535
1536         /**
1537          * @param $isSubjectPreview Boolean: true if this is the section subject/title
1538          *                          up top, or false if this is the comment summary
1539          *                          down below the textarea
1540          * @param $summary String: the text of the summary to display
1541          * @return String
1542          */
1543         protected function getSummaryPreview( $isSubjectPreview, $summary = "" ) {
1544                 if ( !$summary || ( !$this->preview && !$this->diff ) )
1545                         return "";
1546
1547                 global $wgParser, $wgUser;
1548                 $sk = $wgUser->getSkin();
1549
1550                 if ( $isSubjectPreview )
1551                         $summary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $summary ) );
1552
1553                 $message = $isSubjectPreview ? 'subject-preview' : 'summary-preview';
1554
1555                 $summary = wfMsgExt( $message, 'parseinline' ) . $sk->commentBlock( $summary, $this->mTitle, $isSubjectPreview );
1556                 return Xml::tags( 'div', array( 'class' => 'mw-summary-preview' ), $summary );
1557         }
1558
1559         protected function showFormBeforeText() {
1560                 global $wgOut;
1561                 $section = htmlspecialchars( $this->section );
1562                 $wgOut->addHTML( <<<INPUTS
1563 <input type='hidden' value="{$section}" name="wpSection" />
1564 <input type='hidden' value="{$this->starttime}" name="wpStarttime" />
1565 <input type='hidden' value="{$this->edittime}" name="wpEdittime" />
1566 <input type='hidden' value="{$this->scrolltop}" name="wpScrolltop" id="wpScrolltop" />
1567
1568 INPUTS
1569                 );
1570                 if ( !$this->checkUnicodeCompliantBrowser() )
1571                         $wgOut->addHTML(Xml::hidden( 'safemode', '1' ));
1572         }
1573
1574         protected function showFormAfterText() {
1575                 global $wgOut, $wgUser;
1576                 /**
1577                  * To make it harder for someone to slip a user a page
1578                  * which submits an edit form to the wiki without their
1579                  * knowledge, a random token is associated with the login
1580                  * session. If it's not passed back with the submission,
1581                  * we won't save the page, or render user JavaScript and
1582                  * CSS previews.
1583                  *
1584                  * For anon editors, who may not have a session, we just
1585                  * include the constant suffix to prevent editing from
1586                  * broken text-mangling proxies.
1587                  */
1588                 $wgOut->addHTML( "\n" . Xml::hidden( "wpEditToken", $wgUser->editToken() ) . "\n" );
1589         }
1590
1591         /**
1592          * Subpage overridable method for printing the form for page content editing
1593          * By default this simply outputs wpTextbox1
1594          * Subclasses can override this to provide a custom UI for editing;
1595          * be it a form, or simply wpTextbox1 with a modified content that will be
1596          * reverse modified when extracted from the post data.
1597          * Note that this is basically the inverse for importContentFormData
1598          *
1599          * @param $request WebRequest
1600          */
1601         protected function showContentForm() {
1602                 $this->showTextbox1();
1603         }
1604
1605         /**
1606          * Method to output wpTextbox1
1607          * The $textoverride method can be used by subclasses overriding showContentForm
1608          * to pass back to this method.
1609          *
1610          * @param $customAttribs An array of html attributes to use in the textarea
1611          * @param $textoverride String: optional text to override $this->textarea1 with
1612          */
1613         protected function showTextbox1($customAttribs = null, $textoverride = null) {
1614                 $classes = array(); // Textarea CSS
1615                 if ( $this->mTitle->getNamespace() != NS_MEDIAWIKI && $this->mTitle->isProtected( 'edit' ) ) {
1616                         # Is the title semi-protected?
1617                         if ( $this->mTitle->isSemiProtected() ) {
1618                                 $classes[] = 'mw-textarea-sprotected';
1619                         } else {
1620                                 # Then it must be protected based on static groups (regular)
1621                                 $classes[] = 'mw-textarea-protected';
1622                         }
1623                 }
1624                 $attribs = array( 'tabindex' => 1 );
1625                 if ( is_array($customAttribs) )
1626                         $attribs += $customAttribs;
1627
1628                 if ( $this->wasDeletedSinceLastEdit() )
1629                         $attribs['type'] = 'hidden';
1630                 if ( !empty( $classes ) ) {
1631                         if ( isset($attribs['class']) )
1632                                 $classes[] = $attribs['class'];
1633                         $attribs['class'] = implode( ' ', $classes );
1634                 }
1635
1636                 $this->showTextbox( isset($textoverride) ? $textoverride : $this->textbox1, 'wpTextbox1', $attribs );
1637         }
1638
1639         protected function showTextbox2() {
1640                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
1641         }
1642
1643         protected function showTextbox( $content, $name, $customAttribs = array() ) {
1644                 global $wgOut, $wgUser;
1645
1646                 $wikitext = $this->safeUnicodeOutput( $content );
1647                 if ( $wikitext !== '' ) {
1648                         // Ensure there's a newline at the end, otherwise adding lines
1649                         // is awkward.
1650                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1651                         // mode will show an extra newline. A bit annoying.
1652                         $wikitext .= "\n";
1653                 }
1654
1655                 $attribs = $customAttribs + array(
1656                         'accesskey' => ',',
1657                         'id'   => $name,
1658                         'cols' => $wgUser->getIntOption( 'cols' ),
1659                         'rows' => $wgUser->getIntOption( 'rows' ),
1660                         'style' => '' // avoid php notices when appending preferences (appending allows customAttribs['style'] to still work
1661                 );
1662
1663                 $wgOut->addHTML( Html::textarea( $name, $wikitext, $attribs ) );
1664         }
1665
1666         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1667                 global $wgOut;
1668                 $classes = array();
1669                 if ( $isOnTop )
1670                         $classes[] = 'ontop';
1671
1672                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1673
1674                 if ( $this->formtype != 'preview' )
1675                         $attribs['style'] = 'display: none;';
1676
1677                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1678
1679                 if ( $this->formtype == 'preview' ) {
1680                         $this->showPreview( $previewOutput );
1681                 }
1682
1683                 $wgOut->addHTML( '</div>' );
1684
1685                 if ( $this->formtype == 'diff') {
1686                         $this->showDiff();
1687                 }
1688         }
1689
1690         /**
1691          * Append preview output to $wgOut.
1692          * Includes category rendering if this is a category page.
1693          *
1694          * @param $text String: the HTML to be output for the preview.
1695          */
1696         protected function showPreview( $text ) {
1697                 global $wgOut;
1698                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1699                         $this->mArticle->openShowCategory();
1700                 }
1701                 # This hook seems slightly odd here, but makes things more
1702                 # consistent for extensions.
1703                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1704                 $wgOut->addHTML( $text );
1705                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1706                         $this->mArticle->closeShowCategory();
1707                 }
1708         }
1709
1710         /**
1711          * Give a chance for site and per-namespace customizations of
1712          * terms of service summary link that might exist separately
1713          * from the copyright notice.
1714          *
1715          * This will display between the save button and the edit tools,
1716          * so should remain short!
1717          */
1718         protected function showTosSummary() {
1719                 $msg = 'editpage-tos-summary';
1720                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1721                 $text = wfMsg( $msg );
1722                 if( !wfEmptyMsg( $msg, $text ) && $text !== '-' ) {
1723                         global $wgOut;
1724                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1725                         $wgOut->addWikiMsgArray( $msg, array() );
1726                         $wgOut->addHTML( '</div>' );
1727                 }
1728         }
1729
1730         protected function showEditTools() {
1731                 global $wgOut;
1732                 $wgOut->addHTML( '<div class="mw-editTools">' );
1733                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1734                 $wgOut->addHTML( '</div>' );
1735         }
1736
1737         protected function getCopywarn() {
1738                 global $wgRightsText;
1739                 if ( $wgRightsText ) {
1740                         $copywarnMsg = array( 'copyrightwarning',
1741                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1742                                 $wgRightsText );
1743                 } else {
1744                         $copywarnMsg = array( 'copyrightwarning2',
1745                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1746                 }
1747                 // Allow for site and per-namespace customization of contribution/copyright notice.
1748                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1749
1750                 return "<div id=\"editpage-copywarn\">\n" . call_user_func_array("wfMsgNoTrans", $copywarnMsg) . "\n</div>";
1751         }
1752
1753         protected function showStandardInputs( &$tabindex = 2 ) {
1754                 global $wgOut, $wgUser;
1755                 $wgOut->addHTML( "<div class='editOptions'>\n" );
1756
1757                 if ( $this->section != 'new' ) {
1758                         $this->showSummaryInput( false, $this->summary );
1759                         $wgOut->addHTML( $this->getSummaryPreview( false, $this->summary ) );
1760                 }
1761
1762                 $checkboxes = $this->getCheckboxes( $tabindex, $wgUser->getSkin(),
1763                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1764                 $wgOut->addHTML( "<div class='editCheckboxes'>" . implode( $checkboxes, "\n" ) . "</div>\n" );
1765                 $wgOut->addHTML( "<div class='editButtons'>\n" );
1766                 $wgOut->addHTML( implode( $this->getEditButtons( $tabindex ), "\n" ) . "\n" );
1767
1768                 $cancel = $this->getCancelLink();
1769                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1770                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
1771                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1772                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1773                         htmlspecialchars( wfMsg( 'newwindow' ) );
1774                 $wgOut->addHTML( "      <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>\n" );
1775                 $wgOut->addHTML( "</div><!-- editButtons -->\n</div><!-- editOptions -->\n" );
1776         }
1777
1778         /*
1779          * Show an edit conflict. textbox1 is already shown in showEditForm().
1780          * If you want to use another entry point to this function, be careful.
1781          */
1782         protected function showConflict() {
1783                 global $wgOut;
1784                 $this->textbox2 = $this->textbox1;
1785                 $this->textbox1 = $this->getContent();
1786                 if ( wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1787                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
1788
1789                         $de = new DifferenceEngine( $this->mTitle );
1790                         $de->setText( $this->textbox2, $this->textbox1 );
1791                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1792
1793                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
1794                         $this->showTextbox2();
1795                 }
1796         }
1797
1798         protected function getLastDelete() {
1799                 $dbr = wfGetDB( DB_SLAVE );
1800                 $data = $dbr->selectRow(
1801                         array( 'logging', 'user' ),
1802                         array( 'log_type',
1803                                'log_action',
1804                                'log_timestamp',
1805                                'log_user',
1806                                'log_namespace',
1807                                'log_title',
1808                                'log_comment',
1809                                'log_params',
1810                                'log_deleted',
1811                                'user_name' ),
1812                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1813                                'log_title' => $this->mTitle->getDBkey(),
1814                                'log_type' => 'delete',
1815                                'log_action' => 'delete',
1816                                'user_id=log_user' ),
1817                         __METHOD__,
1818                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1819                 );
1820                 // Quick paranoid permission checks...
1821                 if( is_object( $data ) ) {
1822                         if( $data->log_deleted & LogPage::DELETED_USER )
1823                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
1824                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1825                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
1826                 }
1827                 return $data;
1828         }
1829
1830         /**
1831          * Get the rendered text for previewing.
1832          * @return string
1833          */
1834         function getPreviewText() {
1835                 global $wgOut, $wgUser, $wgParser, $wgMessageCache;
1836
1837                 wfProfileIn( __METHOD__ );
1838
1839                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1840                         if ( $this->mTokenOkExceptSuffix ) {
1841                                 $note = wfMsg( 'token_suffix_mismatch' );
1842                         } else {
1843                                 $note = wfMsg( 'session_fail_preview' );
1844                         }
1845                 } else {
1846                         $note = wfMsg( 'previewnote' );
1847                 }
1848
1849                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1850                 $parserOptions->setEditSection( false );
1851                 $parserOptions->setIsPreview( true );
1852                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1853
1854                 global $wgRawHtml;
1855                 if ( $wgRawHtml && !$this->mTokenOk ) {
1856                         // Could be an offsite preview attempt. This is very unsafe if
1857                         // HTML is enabled, as it could be an attack.
1858                         return $wgOut->parse( "<div class='previewnote'>" .
1859                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1860                 }
1861
1862                 # don't parse user css/js, show message about preview
1863                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1864
1865                 if ( $this->isCssJsSubpage ) {
1866                         if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
1867                                 $previewtext = "<div id='mw-usercsspreview'>\n" . wfMsg( 'usercsspreview' ) . "\n</div>";
1868                         } else if (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
1869                                 $previewtext = "<div id='mw-userjspreview'>\n" . wfMsg( 'userjspreview' ) . "\n</div>";
1870                         }
1871                         $parserOptions->setTidy( true );
1872                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
1873                         $previewHTML = $parserOutput->mText;
1874                 } elseif ( $rt = Title::newFromRedirectArray( $this->textbox1 ) ) {
1875                         $previewHTML = $this->mArticle->viewRedirect( $rt, false );
1876                 } else {
1877                         $toparse = $this->textbox1;
1878
1879                         # If we're adding a comment, we need to show the
1880                         # summary as the headline
1881                         if ( $this->section == "new" && $this->summary != "" ) {
1882                                 $toparse = "== {$this->summary} ==\n\n" . $toparse;
1883                         }
1884
1885                         wfRunHooks( 'EditPageGetPreviewText', array( $this, &$toparse ) );
1886
1887                         // Parse mediawiki messages with correct target language
1888                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1889                                 list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
1890                                 $obj = wfGetLangObj( $lang );
1891                                 $parserOptions->setTargetLanguage( $obj );
1892                         }
1893
1894
1895                         $parserOptions->setTidy( true );
1896                         $parserOptions->enableLimitReport();
1897                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1898                                         $this->mTitle, $parserOptions );
1899
1900                         $previewHTML = $parserOutput->getText();
1901                         $this->mParserOutput = $parserOutput;
1902                         $wgOut->addParserOutputNoText( $parserOutput );
1903
1904                         if ( count( $parserOutput->getWarnings() ) ) {
1905                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1906                         }
1907                 }
1908
1909                 if( $this->isConflict ) {
1910                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1911                 } else {
1912                         $conflict = '<hr />';
1913                 }
1914
1915                 $previewhead = "<div class='previewnote'>\n" .
1916                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
1917                         $wgOut->parse( $note ) . $conflict . "</div>\n";
1918
1919                 wfProfileOut( __METHOD__ );
1920                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
1921         }
1922
1923         function getTemplates() {
1924                 if ( $this->preview || $this->section != '' ) {
1925                         $templates = array();
1926                         if ( !isset( $this->mParserOutput ) ) return $templates;
1927                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
1928                                 foreach( array_keys( $template ) as $dbk ) {
1929                                         $templates[] = Title::makeTitle($ns, $dbk);
1930                                 }
1931                         }
1932                         return $templates;
1933                 } else {
1934                         return $this->mArticle->getUsedTemplates();
1935                 }
1936         }
1937
1938         /**
1939          * Call the stock "user is blocked" page
1940          */
1941         function blockedPage() {
1942                 global $wgOut;
1943                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1944
1945                 # If the user made changes, preserve them when showing the markup
1946                 # (This happens when a user is blocked during edit, for instance)
1947                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1948                 if ( $first ) {
1949                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1950                 } else {
1951                         $source = $this->textbox1;
1952                 }
1953
1954                 # Spit out the source or the user's modified version
1955                 if ( $source !== false ) {
1956                         $wgOut->addHTML( '<hr />' );
1957                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1958                         $this->showTextbox1( array( 'readonly' ), $source );
1959                 }
1960         }
1961
1962         /**
1963          * Produce the stock "please login to edit pages" page
1964          */
1965         function userNotLoggedInPage() {
1966                 global $wgUser, $wgOut, $wgTitle;
1967                 $skin = $wgUser->getSkin();
1968
1969                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1970                 $loginLink = $skin->link(
1971                         $loginTitle,
1972                         wfMsgHtml( 'loginreqlink' ),
1973                         array(),
1974                         array( 'returnto' => $wgTitle->getPrefixedText() ),
1975                         array( 'known', 'noclasses' )
1976                 );
1977
1978                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1979                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1980                 $wgOut->setArticleRelated( false );
1981
1982                 $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1983                 $wgOut->returnToMain( false, $wgTitle );
1984         }
1985
1986         /**
1987          * Creates a basic error page which informs the user that
1988          * they have attempted to edit a nonexistent section.
1989          */
1990         function noSuchSectionPage() {
1991                 global $wgOut;
1992
1993                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1994                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1995                 $wgOut->setArticleRelated( false );
1996
1997                 $res = wfMsgExt( 'nosuchsectiontext', 'parse', $this->section );
1998                 wfRunHooks( 'EditPageNoSuchSection', array( &$this, &$res ) );
1999                 $wgOut->addHTML( $res );
2000
2001                 $wgOut->returnToMain( false, $this->mTitle );
2002         }
2003
2004         /**
2005          * Produce the stock "your edit contains spam" page
2006          *
2007          * @param $match Text which triggered one or more filters
2008          */
2009         static function spamPage( $match = false ) {
2010                 global $wgOut, $wgTitle;
2011
2012                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
2013                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
2014                 $wgOut->setArticleRelated( false );
2015
2016                 $wgOut->addHTML( '<div id="spamprotected">' );
2017                 $wgOut->addWikiMsg( 'spamprotectiontext' );
2018                 if ( $match ) {
2019                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
2020                 }
2021                 $wgOut->addHTML( '</div>' );
2022
2023                 $wgOut->returnToMain( false, $wgTitle );
2024         }
2025
2026         /**
2027          * @private
2028          * @todo document
2029          */
2030         function mergeChangesInto( &$editText ){
2031                 wfProfileIn( __METHOD__ );
2032
2033                 $db = wfGetDB( DB_MASTER );
2034
2035                 // This is the revision the editor started from
2036                 $baseRevision = $this->getBaseRevision();
2037                 if ( is_null( $baseRevision ) ) {
2038                         wfProfileOut( __METHOD__ );
2039                         return false;
2040                 }
2041                 $baseText = $baseRevision->getText();
2042
2043                 // The current state, we want to merge updates into it
2044                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2045                 if ( is_null( $currentRevision ) ) {
2046                         wfProfileOut( __METHOD__ );
2047                         return false;
2048                 }
2049                 $currentText = $currentRevision->getText();
2050
2051                 $result = '';
2052                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
2053                         $editText = $result;
2054                         wfProfileOut( __METHOD__ );
2055                         return true;
2056                 } else {
2057                         wfProfileOut( __METHOD__ );
2058                         return false;
2059                 }
2060         }
2061
2062         /**
2063          * Check if the browser is on a blacklist of user-agents known to
2064          * mangle UTF-8 data on form submission. Returns true if Unicode
2065          * should make it through, false if it's known to be a problem.
2066          * @return bool
2067          * @private
2068          */
2069         function checkUnicodeCompliantBrowser() {
2070                 global $wgBrowserBlackList;
2071                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2072                         // No User-Agent header sent? Trust it by default...
2073                         return true;
2074                 }
2075                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2076                 foreach ( $wgBrowserBlackList as $browser ) {
2077                         if ( preg_match($browser, $currentbrowser) ) {
2078                                 return false;
2079                         }
2080                 }
2081                 return true;
2082         }
2083
2084         /**
2085          * @deprecated use $wgParser->stripSectionName()
2086          */
2087         function pseudoParseSectionAnchor( $text ) {
2088                 global $wgParser;
2089                 return $wgParser->stripSectionName( $text );
2090         }
2091
2092         /**
2093          * Format an anchor fragment as it would appear for a given section name
2094          * @param $text String
2095          * @return String
2096          * @private
2097          */
2098         function sectionAnchor( $text ) {
2099                 global $wgParser;
2100                 return $wgParser->guessSectionNameFromWikiText( $text );
2101         }
2102
2103         /**
2104          * Shows a bulletin board style toolbar for common editing functions.
2105          * It can be disabled in the user preferences.
2106          * The necessary JavaScript code can be found in skins/common/edit.js.
2107          *
2108          * @return string
2109          */
2110         static function getEditToolbar() {
2111                 global $wgStylePath, $wgContLang, $wgLang;
2112
2113                 /**
2114
2115                  * toolarray an array of arrays which each include the filename of
2116                  * the button image (without path), the opening tag, the closing tag,
2117                  * and optionally a sample text that is inserted between the two when no
2118                  * selection is highlighted.
2119                  * The tip text is shown when the user moves the mouse over the button.
2120                  *
2121                  * Already here are accesskeys (key), which are not used yet until someone
2122                  * can figure out a way to make them work in IE. However, we should make
2123                  * sure these keys are not defined on the edit page.
2124                  */
2125                 $toolarray = array(
2126                         array(
2127                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2128                                 'id'     => 'mw-editbutton-bold',
2129                                 'open'   => '\'\'\'',
2130                                 'close'  => '\'\'\'',
2131                                 'sample' => wfMsg( 'bold_sample' ),
2132                                 'tip'    => wfMsg( 'bold_tip' ),
2133                                 'key'    => 'B'
2134                         ),
2135                         array(
2136                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2137                                 'id'     => 'mw-editbutton-italic',
2138                                 'open'   => '\'\'',
2139                                 'close'  => '\'\'',
2140                                 'sample' => wfMsg( 'italic_sample' ),
2141                                 'tip'    => wfMsg( 'italic_tip' ),
2142                                 'key'    => 'I'
2143                         ),
2144                         array(
2145                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2146                                 'id'     => 'mw-editbutton-link',
2147                                 'open'   => '[[',
2148                                 'close'  => ']]',
2149                                 'sample' => wfMsg( 'link_sample' ),
2150                                 'tip'    => wfMsg( 'link_tip' ),
2151                                 'key'    => 'L'
2152                         ),
2153                         array(
2154                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2155                                 'id'     => 'mw-editbutton-extlink',
2156                                 'open'   => '[',
2157                                 'close'  => ']',
2158                                 'sample' => wfMsg( 'extlink_sample' ),
2159                                 'tip'    => wfMsg( 'extlink_tip' ),
2160                                 'key'    => 'X'
2161                         ),
2162                         array(
2163                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2164                                 'id'     => 'mw-editbutton-headline',
2165                                 'open'   => "\n== ",
2166                                 'close'  => " ==\n",
2167                                 'sample' => wfMsg( 'headline_sample' ),
2168                                 'tip'    => wfMsg( 'headline_tip' ),
2169                                 'key'    => 'H'
2170                         ),
2171                         array(
2172                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2173                                 'id'     => 'mw-editbutton-image',
2174                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2175                                 'close'  => ']]',
2176                                 'sample' => wfMsg( 'image_sample' ),
2177                                 'tip'    => wfMsg( 'image_tip' ),
2178                                 'key'    => 'D'
2179                         ),
2180                         array(
2181                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2182                                 'id'     => 'mw-editbutton-media',
2183                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2184                                 'close'  => ']]',
2185                                 'sample' => wfMsg( 'media_sample' ),
2186                                 'tip'    => wfMsg( 'media_tip' ),
2187                                 'key'    => 'M'
2188                         ),
2189                         array(
2190                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2191                                 'id'     => 'mw-editbutton-math',
2192                                 'open'   => "<math>",
2193                                 'close'  => "</math>",
2194                                 'sample' => wfMsg( 'math_sample' ),
2195                                 'tip'    => wfMsg( 'math_tip' ),
2196                                 'key'    => 'C'
2197                         ),
2198                         array(
2199                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2200                                 'id'     => 'mw-editbutton-nowiki',
2201                                 'open'   => "<nowiki>",
2202                                 'close'  => "</nowiki>",
2203                                 'sample' => wfMsg( 'nowiki_sample' ),
2204                                 'tip'    => wfMsg( 'nowiki_tip' ),
2205                                 'key'    => 'N'
2206                         ),
2207                         array(
2208                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2209                                 'id'     => 'mw-editbutton-signature',
2210                                 'open'   => '--~~~~',
2211                                 'close'  => '',
2212                                 'sample' => '',
2213                                 'tip'    => wfMsg( 'sig_tip' ),
2214                                 'key'    => 'Y'
2215                         ),
2216                         array(
2217                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2218                                 'id'     => 'mw-editbutton-hr',
2219                                 'open'   => "\n----\n",
2220                                 'close'  => '',
2221                                 'sample' => '',
2222                                 'tip'    => wfMsg( 'hr_tip' ),
2223                                 'key'    => 'R'
2224                         )
2225                 );
2226                 $toolbar = "<div id='toolbar'>\n";
2227
2228                 $script = '';
2229                 foreach ( $toolarray as $tool ) {
2230                         $params = array(
2231                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2232                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2233                                 // Older browsers show a "speedtip" type message only for ALT.
2234                                 // Ideally these should be different, realistically they
2235                                 // probably don't need to be.
2236                                 $tip = $tool['tip'],
2237                                 $open = $tool['open'],
2238                                 $close = $tool['close'],
2239                                 $sample = $tool['sample'],
2240                                 $cssId = $tool['id'],
2241                         );
2242
2243                         $paramList = implode( ',',
2244                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2245                         $script .= "addButton($paramList);\n";
2246                 }
2247                 $toolbar .= Html::inlineScript( "\n$script\n" );
2248
2249                 $toolbar .= "\n</div>";
2250
2251                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2252
2253                 return $toolbar;
2254         }
2255
2256         /**
2257          * Returns an array of html code of the following checkboxes:
2258          * minor and watch
2259          *
2260          * @param $tabindex Current tabindex
2261          * @param $skin Skin object
2262          * @param $checked Array of checkbox => bool, where bool indicates the checked
2263          *                 status of the checkbox
2264          *
2265          * @return array
2266          */
2267         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2268                 global $wgUser;
2269
2270                 $checkboxes = array();
2271
2272                 $checkboxes['minor'] = '';
2273                 $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2274                 if ( $wgUser->isAllowed( 'minoredit' ) ) {
2275                         $attribs = array(
2276                                 'tabindex'  => ++$tabindex,
2277                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
2278                                 'id'        => 'wpMinoredit',
2279                         );
2280                         $checkboxes['minor'] =
2281                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2282                                 "&#160;<label for='wpMinoredit' id='mw-editpage-minoredit'" . $skin->tooltip( 'minoredit', 'withaccess' ) . ">{$minorLabel}</label>";
2283                 }
2284
2285                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2286                 $checkboxes['watch'] = '';
2287                 if ( $wgUser->isLoggedIn() ) {
2288                         $attribs = array(
2289                                 'tabindex'  => ++$tabindex,
2290                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2291                                 'id'        => 'wpWatchthis',
2292                         );
2293                         $checkboxes['watch'] =
2294                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2295                                 "&#160;<label for='wpWatchthis' id='mw-editpage-watch'" . $skin->tooltip( 'watch', 'withaccess' ) . ">{$watchLabel}</label>";
2296                 }
2297                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2298                 return $checkboxes;
2299         }
2300
2301         /**
2302          * Returns an array of html code of the following buttons:
2303          * save, diff, preview and live
2304          *
2305          * @param $tabindex Current tabindex
2306          *
2307          * @return array
2308          */
2309         public function getEditButtons(&$tabindex) {
2310                 $buttons = array();
2311
2312                 $temp = array(
2313                         'id'        => 'wpSave',
2314                         'name'      => 'wpSave',
2315                         'type'      => 'submit',
2316                         'tabindex'  => ++$tabindex,
2317                         'value'     => wfMsg( 'savearticle' ),
2318                         'accesskey' => wfMsg( 'accesskey-save' ),
2319                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2320                 );
2321                 $buttons['save'] = Xml::element('input', $temp, '');
2322
2323                 ++$tabindex; // use the same for preview and live preview
2324                 $temp = array(
2325                         'id'        => 'wpPreview',
2326                         'name'      => 'wpPreview',
2327                         'type'      => 'submit',
2328                         'tabindex'  => $tabindex,
2329                         'value'     => wfMsg( 'showpreview' ),
2330                         'accesskey' => wfMsg( 'accesskey-preview' ),
2331                         'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2332                 );
2333                 $buttons['preview'] = Xml::element( 'input', $temp, '' );
2334                 $buttons['live'] = '';
2335
2336                 $temp = array(
2337                         'id'        => 'wpDiff',
2338                         'name'      => 'wpDiff',
2339                         'type'      => 'submit',
2340                         'tabindex'  => ++$tabindex,
2341                         'value'     => wfMsg( 'showdiff' ),
2342                         'accesskey' => wfMsg( 'accesskey-diff' ),
2343                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2344                 );
2345                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2346
2347                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2348                 return $buttons;
2349         }
2350
2351         /**
2352          * Output preview text only. This can be sucked into the edit page
2353          * via JavaScript, and saves the server time rendering the skin as
2354          * well as theoretically being more robust on the client (doesn't
2355          * disturb the edit box's undo history, won't eat your text on
2356          * failure, etc).
2357          *
2358          * @todo This doesn't include category or interlanguage links.
2359          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2360          *       or something...</s> that might also require more skin
2361          *       initialization, so check whether that's a problem.
2362          */
2363         function livePreview() {
2364                 global $wgOut;
2365                 $wgOut->disable();
2366                 header( 'Content-type: text/xml; charset=utf-8' );
2367                 header( 'Cache-control: no-cache' );
2368
2369                 $previewText = $this->getPreviewText();
2370                 #$categories = $skin->getCategoryLinks();
2371
2372                 $s =
2373                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2374                 Xml::tags( 'livepreview', null,
2375                         Xml::element( 'preview', null, $previewText )
2376                         #.      Xml::element( 'category', null, $categories )
2377                 );
2378                 echo $s;
2379         }
2380
2381
2382         public function getCancelLink() {
2383                 global $wgUser, $wgTitle;
2384
2385                 $cancelParams = array();
2386                 if ( !$this->isConflict && $this->mArticle->getOldID() > 0 ) {
2387                         $cancelParams['oldid'] = $this->mArticle->getOldID();
2388                 }
2389
2390                 return $wgUser->getSkin()->link(
2391                         $wgTitle,
2392                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
2393                         array( 'id' => 'mw-editform-cancel' ),
2394                         $cancelParams,
2395                         array( 'known', 'noclasses' )
2396                 );
2397         }
2398
2399         /**
2400          * Get a diff between the current contents of the edit box and the
2401          * version of the page we're editing from.
2402          *
2403          * If this is a section edit, we'll replace the section as for final
2404          * save and then make a comparison.
2405          */
2406         function showDiff() {
2407                 $oldtext = $this->mArticle->fetchContent();
2408                 $newtext = $this->mArticle->replaceSection(
2409                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2410
2411                 wfRunHooks( 'EditPageGetDiffText', array( $this, &$newtext ) );
2412
2413                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2414                 $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2415                 $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2416                 if ( $oldtext !== false  || $newtext != '' ) {
2417                         $de = new DifferenceEngine( $this->mTitle );
2418                         $de->setText( $oldtext, $newtext );
2419                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2420                         $de->showDiffStyle();
2421                 } else {
2422                         $difftext = '';
2423                 }
2424
2425                 global $wgOut;
2426                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2427         }
2428
2429         /**
2430          * Filter an input field through a Unicode de-armoring process if it
2431          * came from an old browser with known broken Unicode editing issues.
2432          *
2433          * @param $request WebRequest
2434          * @param $field String
2435          * @return String
2436          * @private
2437          */
2438         function safeUnicodeInput( $request, $field ) {
2439                 $text = rtrim( $request->getText( $field ) );
2440                 return $request->getBool( 'safemode' )
2441                         ? $this->unmakesafe( $text )
2442                         : $text;
2443         }
2444
2445         function safeUnicodeText( $request, $text ) {
2446                 $text = rtrim( $text );
2447                 return $request->getBool( 'safemode' )
2448                         ? $this->unmakesafe( $text )
2449                         : $text;
2450         }
2451
2452         /**
2453          * Filter an output field through a Unicode armoring process if it is
2454          * going to an old browser with known broken Unicode editing issues.
2455          *
2456          * @param $text String
2457          * @return String
2458          * @private
2459          */
2460         function safeUnicodeOutput( $text ) {
2461                 global $wgContLang;
2462                 $codedText = $wgContLang->recodeForEdit( $text );
2463                 return $this->checkUnicodeCompliantBrowser()
2464                         ? $codedText
2465                         : $this->makesafe( $codedText );
2466         }
2467
2468         /**
2469          * A number of web browsers are known to corrupt non-ASCII characters
2470          * in a UTF-8 text editing environment. To protect against this,
2471          * detected browsers will be served an armored version of the text,
2472          * with non-ASCII chars converted to numeric HTML character references.
2473          *
2474          * Preexisting such character references will have a 0 added to them
2475          * to ensure that round-trips do not alter the original data.
2476          *
2477          * @param $invalue String
2478          * @return String
2479          * @private
2480          */
2481         function makesafe( $invalue ) {
2482                 // Armor existing references for reversability.
2483                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2484
2485                 $bytesleft = 0;
2486                 $result = "";
2487                 $working = 0;
2488                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2489                         $bytevalue = ord( $invalue{$i} );
2490                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2491                                 $result .= chr( $bytevalue );
2492                                 $bytesleft = 0;
2493                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2494                                 $working = $working << 6;
2495                                 $working += ($bytevalue & 0x3F);
2496                                 $bytesleft--;
2497                                 if ( $bytesleft <= 0 ) {
2498                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2499                                 }
2500                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2501                                 $working = $bytevalue & 0x1F;
2502                                 $bytesleft = 1;
2503                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2504                                 $working = $bytevalue & 0x0F;
2505                                 $bytesleft = 2;
2506                         } else { //1111 0xxx
2507                                 $working = $bytevalue & 0x07;
2508                                 $bytesleft = 3;
2509                         }
2510                 }
2511                 return $result;
2512         }
2513
2514         /**
2515          * Reverse the previously applied transliteration of non-ASCII characters
2516          * back to UTF-8. Used to protect data from corruption by broken web browsers
2517          * as listed in $wgBrowserBlackList.
2518          *
2519          * @param $invalue String
2520          * @return String
2521          * @private
2522          */
2523         function unmakesafe( $invalue ) {
2524                 $result = "";
2525                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2526                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2527                                 $i += 3;
2528                                 $hexstring = "";
2529                                 do {
2530                                         $hexstring .= $invalue{$i};
2531                                         $i++;
2532                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2533
2534                                 // Do some sanity checks. These aren't needed for reversability,
2535                                 // but should help keep the breakage down if the editor
2536                                 // breaks one of the entities whilst editing.
2537                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2538                                         $codepoint = hexdec($hexstring);
2539                                         $result .= codepointToUtf8( $codepoint );
2540                                 } else {
2541                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2542                                 }
2543                         } else {
2544                                 $result .= substr( $invalue, $i, 1 );
2545                         }
2546                 }
2547                 // reverse the transform that we made for reversability reasons.
2548                 return strtr( $result, array( "&#x0" => "&#x" ) );
2549         }
2550
2551         function noCreatePermission() {
2552                 global $wgOut;
2553                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2554                 $wgOut->addWikiMsg( 'nocreatetext' );
2555         }
2556
2557         /**
2558          * Attempt submission
2559          * @return bool false if output is done, true if the rest of the form should be displayed
2560          */
2561         function attemptSave() {
2562                 global $wgUser, $wgOut, $wgTitle;
2563
2564                 $resultDetails = false;
2565                 # Allow bots to exempt some edits from bot flagging
2566                 $bot = $wgUser->isAllowed( 'bot' ) && $this->bot;
2567                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2568
2569                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2570                         $this->didSave = true;
2571                 }
2572
2573                 switch ( $value ) {
2574                         case self::AS_HOOK_ERROR_EXPECTED:
2575                         case self::AS_CONTENT_TOO_BIG:
2576                         case self::AS_ARTICLE_WAS_DELETED:
2577                         case self::AS_CONFLICT_DETECTED:
2578                         case self::AS_SUMMARY_NEEDED:
2579                         case self::AS_TEXTBOX_EMPTY:
2580                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2581                         case self::AS_END:
2582                                 return true;
2583
2584                         case self::AS_HOOK_ERROR:
2585                         case self::AS_FILTERING:
2586                         case self::AS_SUCCESS_NEW_ARTICLE:
2587                         case self::AS_SUCCESS_UPDATE:
2588                                 return false;
2589
2590                         case self::AS_SPAM_ERROR:
2591                                 self::spamPage( $resultDetails['spam'] );
2592                                 return false;
2593
2594                         case self::AS_BLOCKED_PAGE_FOR_USER:
2595                                 $this->blockedPage();
2596                                 return false;
2597
2598                         case self::AS_IMAGE_REDIRECT_ANON:
2599                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2600                                 return false;
2601
2602                         case self::AS_READ_ONLY_PAGE_ANON:
2603                                 $this->userNotLoggedInPage();
2604                                 return false;
2605
2606                         case self::AS_READ_ONLY_PAGE_LOGGED:
2607                         case self::AS_READ_ONLY_PAGE:
2608                                 $wgOut->readOnlyPage();
2609                                 return false;
2610
2611                         case self::AS_RATE_LIMITED:
2612                                 $wgOut->rateLimited();
2613                                 return false;
2614
2615                         case self::AS_NO_CREATE_PERMISSION:
2616                                 $this->noCreatePermission();
2617                                 return;
2618
2619                         case self::AS_BLANK_ARTICLE:
2620                                 $wgOut->redirect( $wgTitle->getFullURL() );
2621                                 return false;
2622
2623                         case self::AS_IMAGE_REDIRECT_LOGGED:
2624                                 $wgOut->permissionRequired( 'upload' );
2625                                 return false;
2626                 }
2627         }
2628
2629         function getBaseRevision() {
2630                 if ( !$this->mBaseRevision ) {
2631                         $db = wfGetDB( DB_MASTER );
2632                         $baseRevision = Revision::loadFromTimestamp(
2633                                 $db, $this->mTitle, $this->edittime );
2634                         return $this->mBaseRevision = $baseRevision;
2635                 } else {
2636                         return $this->mBaseRevision;
2637                 }
2638         }
2639 }