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 $mMetaData = '';
  49         var $isConflict = false;
  50         var $isCssJsSubpage = false;
  51         var $isCssSubpage = false;
  52         var $isJsSubpage = false;
  53         var $deletedSinceEdit = false;
  54         var $formtype;
  55         var $firsttime;
  56         var $lastDelete;
  57         var $mTokenOk = false;
  58         var $mTokenOkExceptSuffix = false;
  59         var $mTriedSave = false;
  60         var $tooBig = false;
  61         var $kblength = false;
  62         var $missingComment = false;
  63         var $missingSummary = false;
  64         var $allowBlankSummary = false;
  65         var $autoSumm = '';
  66         var $hookError = '';
  67         #var $mPreviewTemplates;
  68         var $mParserOutput;
  69         var $mBaseRevision = false;
  70         var $mShowSummaryField = true;
  71
  72         # Form values
  73         var $save = false, $preview = false, $diff = false;
  74         var $minoredit = false, $watchthis = false, $recreate = false;
  75         var $textbox1 = '', $textbox2 = '', $summary = '';
  76         var $edittime = '', $section = '', $starttime = '';
  77         var $oldid = 0, $editintro = '', $scrolltop = null;
  78
  79         # Placeholders for text injection by hooks (must be HTML)
  80         # extensions should take care to _append_ to the present value
  81         public $editFormPageTop; // Before even the preview
  82         public $editFormTextTop;
  83         public $editFormTextBeforeContent;
  84         public $editFormTextAfterWarn;
  85         public $editFormTextAfterTools;
  86         public $editFormTextBottom;
  87         public $editFormTextAfterContent;
  88         public $previewTextAfterContent;
  89
  90         /* $didSave should be set to true whenever an article was succesfully altered. */
  91         public $didSave = false;
  92         public $undidRev = 0;
  93
  94         public $suppressIntro = false;
  95
  96         /**
  97          * @todo document
  98          * @param $article
  99          */
 100         function EditPage( $article ) {
 101                 $this->mArticle =& $article;
 102                 $this->mTitle = $article->getTitle();
 103                 $this->action = 'submit';
 104
 105                 # Placeholders for text injection by hooks (empty per default)
 106                 $this->editFormPageTop =
 107                 $this->editFormTextTop =
 108                 $this->editFormTextBeforeContent =
 109                 $this->editFormTextAfterWarn =
 110                 $this->editFormTextAfterTools =
 111                 $this->editFormTextBottom =
 112                 $this->editFormTextAfterContent =
 113                 $this->previewTextAfterContent =
 114                 $this->mPreloadText = "";
 115         }
 116
 117         function getArticle() {
 118                 return $this->mArticle;
 119         }
 120
 121
 122         /**
 123          * Fetch initial editing page content.
 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                 $preload = $wgRequest->getVal( 'preload' );
 133                 $undoafter = $wgRequest->getVal( 'undoafter' );
 134                 $undo = $wgRequest->getVal( 'undo' );
 135
 136                 $text = '';
 137                 // For message page not locally set, use the i18n message.
 138                 // For other non-existent articles, use preload text if any.
 139                 if ( !$this->mTitle->exists() ) {
 140                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
 141                                 # If this is a system message, get the default text.
 142                                 list( $message, $lang ) = $wgMessageCache->figureMessage( $wgContLang->lcfirst( $this->mTitle->getText() ) );
 143                                 $wgMessageCache->loadAllMessages( $lang );
 144                                 $text = wfMsgGetKey( $message, false, $lang, false );
 145                                 if( wfEmptyMsg( $message, $text ) )
 146                                         $text = $this->getPreloadedText( $preload );
 147                         } else {
 148                                 # If requested, preload some text.
 149                                 $text = $this->getPreloadedText( $preload );
 150                         }
 151                 // For existing pages, get text based on "undo" or section parameters.
 152                 } else {
 153                         $text = $this->mArticle->getContent();
 154                         if ( $undo > 0 && $undoafter > 0 && $undo < $undoafter ) {
 155                                 # If they got undoafter and undo round the wrong way, switch them
 156                                 list( $undo, $undoafter ) = array( $undoafter, $undo );
 157                         }
 158                         if ( $undo > 0 && $undo > $undoafter ) {
 159                                 # Undoing a specific edit overrides section editing; section-editing
 160                                 # doesn't work with undoing.
 161                                 if ( $undoafter ) {
 162                                         $undorev = Revision::newFromId( $undo );
 163                                         $oldrev = Revision::newFromId( $undoafter );
 164                                 } else {
 165                                         $undorev = Revision::newFromId( $undo );
 166                                         $oldrev = $undorev ? $undorev->getPrevious() : null;
 167                                 }
 168
 169                                 # Sanity check, make sure it's the right page,
 170                                 # the revisions exist and they were not deleted.
 171                                 # Otherwise, $text will be left as-is.
 172                                 if ( !is_null( $undorev ) && !is_null( $oldrev ) &&
 173                                         $undorev->getPage() == $oldrev->getPage() &&
 174                                         $undorev->getPage() == $this->mArticle->getID() &&
 175                                         !$undorev->isDeleted( Revision::DELETED_TEXT ) &&
 176                                         !$oldrev->isDeleted( Revision::DELETED_TEXT ) ) {
 177
 178                                         $undotext = $this->mArticle->getUndoText( $undorev, $oldrev );
 179                                         if ( $undotext === false ) {
 180                                                 # Warn the user that something went wrong
 181                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-failure">' . wfMsgNoTrans( 'undo-failure' ) . '</div>' );
 182                                         } else {
 183                                                 $text = $undotext;
 184                                                 # Inform the user of our success and set an automatic edit summary
 185                                                 $this->editFormPageTop .= $wgOut->parse( '<div class="mw-undo-success">' . wfMsgNoTrans( 'undo-success' ) . '</div>' );
 186                                                 $firstrev = $oldrev->getNext();
 187                                                 # If we just undid one rev, use an autosummary
 188                                                 if ( $firstrev->mId == $undo ) {
 189                                                         $this->summary = wfMsgForContent( 'undo-summary', $undo, $undorev->getUserText() );
 190                                                         $this->undidRev = $undo;
 191                                                 }
 192                                                 $this->formtype = 'diff';
 193                                         }
 194                                 } else {
 195                                         // Failed basic sanity checks.
 196                                         // Older revisions may have been removed since the link
 197                                         // was created, or we may simply have got bogus input.
 198                                         $this->editFormPageTop .= $wgOut->parse( '<div class="error mw-undo-norev">' . wfMsgNoTrans( 'undo-norev' ) . '</div>' );
 199                                 }
 200                         } else if ( $section != '' ) {
 201                                 if ( $section == 'new' ) {
 202                                         $text = $this->getPreloadedText( $preload );
 203                                 } else {
 204                                         $text = $wgParser->getSection( $text, $section, $def_text );
 205                                 }
 206                         }
 207                 }
 208
 209                 wfProfileOut( __METHOD__ );
 210                 return $text;
 211         }
 212
 213         /** Use this method before edit() to preload some text into the edit box */
 214         public function setPreloadedText( $text ) {
 215                 $this->mPreloadText = $text;
 216         }
 217
 218         /**
 219          * Get the contents of a page from its title and remove includeonly tags
 220          *
 221          * @param $preload String: the title of the page.
 222          * @return string The contents of the page.
 223          */
 224         protected function getPreloadedText( $preload ) {
 225                 if ( !empty( $this->mPreloadText ) ) {
 226                         return $this->mPreloadText;
 227                 } elseif ( $preload === '' ) {
 228                         return '';
 229                 } else {
 230                         $preloadTitle = Title::newFromText( $preload );
 231                         if ( isset( $preloadTitle ) && $preloadTitle->userCanRead() ) {
 232                                 $rev = Revision::newFromTitle( $preloadTitle );
 233                                 if ( is_object( $rev ) ) {
 234                                         $text = $rev->getText();
 235                                         // TODO FIXME: AAAAAAAAAAA, this shouldn't be implementing
 236                                         // its own mini-parser! -ævar
 237                                         $text = preg_replace( '~</?includeonly>~', '', $text );
 238                                         return $text;
 239                                 } else
 240                                         return '';
 241                         }
 242                 }
 243         }
 244
 245         /**
 246          * This is the function that extracts metadata from the article body on the first view.
 247          * To turn the feature on, set $wgUseMetadataEdit = true ; in LocalSettings
 248          *  and set $wgMetadataWhitelist to the *full* title of the template whitelist
 249          */
 250         function extractMetaDataFromArticle () {
 251                 global $wgUseMetadataEdit, $wgMetadataWhitelist, $wgContLang;
 252                 $this->mMetaData = '';
 253                 if ( !$wgUseMetadataEdit ) return;
 254                 if ( $wgMetadataWhitelist == '' ) return;
 255                 $s = '';
 256                 $t = $this->getContent();
 257
 258                 # MISSING : <nowiki> filtering
 259
 260                 # Categories and language links
 261                 $t = explode( "\n" , $t );
 262                 $catlow = strtolower( $wgContLang->getNsText( NS_CATEGORY ) );
 263                 $cat = $ll = array();
 264                 foreach ( $t as $key => $x ) {
 265                         $y = trim( strtolower ( $x ) );
 266                         while ( substr( $y , 0 , 2 ) == '[[' ) {
 267                                 $y = explode( ']]' , trim ( $x ) );
 268                                 $first = array_shift( $y );
 269                                 $first = explode( ':' , $first );
 270                                 $ns = array_shift( $first );
 271                                 $ns = trim( str_replace( '[' , '' , $ns ) );
 272                                 if ( $wgContLang->getLanguageName( $ns ) || strtolower( $ns ) == $catlow ) {
 273                                         $add = '[[' . $ns . ':' . implode( ':' , $first ) . ']]';
 274                                         if ( strtolower( $ns ) == $catlow ) $cat[] = $add;
 275                                         else $ll[] = $add;
 276                                         $x = implode( ']]', $y );
 277                                         $t[$key] = $x;
 278                                         $y = trim( strtolower( $x ) );
 279                                 } else {
 280                                         $x = implode( ']]' , $y );
 281                                         $y = trim( strtolower( $x ) );
 282                                 }
 283                         }
 284                 }
 285                 if ( count( $cat ) ) $s .= implode( ' ' , $cat ) . "\n";
 286                 if ( count( $ll ) ) $s .= implode( ' ' , $ll ) . "\n";
 287                 $t = implode( "\n" , $t );
 288
 289                 # Load whitelist
 290                 $sat = array () ; # stand-alone-templates; must be lowercase
 291                 $wl_title = Title::newFromText( $wgMetadataWhitelist );
 292                 $wl_article = new Article ( $wl_title );
 293                 $wl = explode ( "\n" , $wl_article->getContent() );
 294                 foreach ( $wl AS $x ) {
 295                         $isentry = false;
 296                         $x = trim ( $x );
 297                         while ( substr ( $x , 0 , 1 ) == '*' ) {
 298                                 $isentry = true;
 299                                 $x = trim ( substr ( $x , 1 ) );
 300                         }
 301                         if ( $isentry ) {
 302                                 $sat[] = strtolower ( $x );
 303                         }
 304
 305                 }
 306
 307                 # Templates, but only some
 308                 $t = explode( '{{' , $t );
 309                 $tl = array() ;
 310                 foreach ( $t as $key => $x ) {
 311                         $y = explode( '}}' , $x , 2 );
 312                         if ( count( $y ) == 2 ) {
 313                                 $z = $y[0];
 314                                 $z = explode( '|' , $z );
 315                                 $tn = array_shift( $z );
 316                                 if ( in_array( strtolower( $tn ) , $sat ) ) {
 317                                         $tl[] = '{{' . $y[0] . '}}';
 318                                         $t[$key] = $y[1];
 319                                         $y = explode( '}}' , $y[1] , 2 );
 320                                 }
 321                                 else $t[$key] = '{{' . $x;
 322                         }
 323                         else if ( $key != 0 ) $t[$key] = '{{' . $x;
 324                         else $t[$key] = $x;
 325                 }
 326                 if ( count( $tl ) ) $s .= implode( ' ' , $tl );
 327                 $t = implode( '' , $t );
 328
 329                 $t = str_replace( "\n\n\n", "\n", $t );
 330                 $this->mArticle->mContent = $t;
 331                 $this->mMetaData = $s;
 332         }
 333
 334         /*
 335          * Check if a page was deleted while the user was editing it, before submit.
 336          * Note that we rely on the logging table, which hasn't been always there,
 337          * but that doesn't matter, because this only applies to brand new
 338          * deletes.
 339          */
 340         protected function wasDeletedSinceLastEdit() {
 341                 if ( $this->deletedSinceEdit )
 342                         return true;
 343                 if ( $this->mTitle->isDeletedQuick() ) {
 344                         $this->lastDelete = $this->getLastDelete();
 345                         if ( $this->lastDelete ) {
 346                                 $deleteTime = wfTimestamp( TS_MW, $this->lastDelete->log_timestamp );
 347                                 if ( $deleteTime > $this->starttime ) {
 348                                         $this->deletedSinceEdit = true;
 349                                 }
 350                         }
 351                 }
 352                 return $this->deletedSinceEdit;
 353         }
 354
 355         function submit() {
 356                 $this->edit();
 357         }
 358
 359         /**
 360          * This is the function that gets called for "action=edit". It
 361          * sets up various member variables, then passes execution to
 362          * another function, usually showEditForm()
 363          *
 364          * The edit form is self-submitting, so that when things like
 365          * preview and edit conflicts occur, we get the same form back
 366          * with the extra stuff added.  Only when the final submission
 367          * is made and all is well do we actually save and redirect to
 368          * the newly-edited page.
 369          */
 370         function edit() {
 371                 global $wgOut, $wgRequest, $wgEnableJS2system;
 372                 // Allow extensions to modify/prevent this form or submission
 373                 if ( !wfRunHooks( 'AlternateEdit', array( $this ) ) ) {
 374                         return;
 375                 }
 376
 377                 wfProfileIn( __METHOD__ );
 378                 wfDebug( __METHOD__.": enter\n" );
 379
 380                 // This is not an article
 381                 $wgOut->setArticleFlag( false );
 382
 383                 $this->importFormData( $wgRequest );
 384                 $this->firsttime = false;
 385
 386                 if ( $this->live ) {
 387                         $this->livePreview();
 388                         wfProfileOut( __METHOD__ );
 389                         return;
 390                 }
 391
 392                 if ( wfReadOnly() && $this->save ) {
 393                         // Force preview
 394                         $this->save = false;
 395                         $this->preview = true;
 396                 }
 397
 398                 $wgOut->addScriptFile( 'edit.js' );
 399
 400                 if( $wgEnableJS2system )
 401                     $wgOut->addScriptClass( 'editPage' );
 402
 403                 $permErrors = $this->getEditPermissionErrors();
 404                 if ( $permErrors ) {
 405                         wfDebug( __METHOD__ . ": User can't edit\n" );
 406                         $this->readOnlyPage( $this->getContent(), true, $permErrors, 'edit' );
 407                         wfProfileOut( __METHOD__ );
 408                         return;
 409                 } else {
 410                         if ( $this->save ) {
 411                                 $this->formtype = 'save';
 412                         } else if ( $this->preview ) {
 413                                 $this->formtype = 'preview';
 414                         } else if ( $this->diff ) {
 415                                 $this->formtype = 'diff';
 416                         } else { # First time through
 417                                 $this->firsttime = true;
 418                                 if ( $this->previewOnOpen() ) {
 419                                         $this->formtype = 'preview';
 420                                 } else {
 421                                         $this->extractMetaDataFromArticle () ;
 422                                         $this->formtype = 'initial';
 423                                 }
 424                         }
 425                 }
 426
 427                 // If they used redlink=1 and the page exists, redirect to the main article
 428                 if ( $wgRequest->getBool( 'redlink' ) && $this->mTitle->exists() ) {
 429                         $wgOut->redirect( $this->mTitle->getFullURL() );
 430                 }
 431
 432                 wfProfileIn( __METHOD__."-business-end" );
 433
 434                 $this->isConflict = false;
 435                 // css / js subpages of user pages get a special treatment
 436                 $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
 437                 $this->isCssSubpage        = $this->mTitle->isCssSubpage();
 438                 $this->isJsSubpage         = $this->mTitle->isJsSubpage();
 439                 $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 440
 441                 # Show applicable editing introductions
 442                 if ( $this->formtype == 'initial' || $this->firsttime )
 443                         $this->showIntro();
 444
 445                 if ( $this->mTitle->isTalkPage() ) {
 446                         $wgOut->addWikiMsg( 'talkpagetext' );
 447                 }
 448
 449                 # Optional notices on a per-namespace and per-page basis
 450                 $editnotice_ns   = 'editnotice-'.$this->mTitle->getNamespace();
 451                 if ( !wfEmptyMsg( $editnotice_ns, wfMsgForContent( $editnotice_ns ) ) ) {
 452                         $wgOut->addWikiText( wfMsgForContent( $editnotice_ns )  );
 453                 }
 454                 if ( MWNamespace::hasSubpages( $this->mTitle->getNamespace() ) ) {
 455                         $parts = explode( '/', $this->mTitle->getDBkey() );
 456                         $editnotice_base = $editnotice_ns;
 457                         while ( count( $parts ) > 0 ) {
 458                                 $editnotice_base .= '-'.array_shift( $parts );
 459                                 if ( !wfEmptyMsg( $editnotice_base, wfMsgForContent( $editnotice_base ) ) ) {
 460                                         $wgOut->addWikiText( wfMsgForContent( $editnotice_base )  );
 461                                 }
 462                         }
 463                 }
 464
 465                 # Attempt submission here.  This will check for edit conflicts,
 466                 # and redundantly check for locked database, blocked IPs, etc.
 467                 # that edit() already checked just in case someone tries to sneak
 468                 # in the back door with a hand-edited submission URL.
 469
 470                 if ( 'save' == $this->formtype ) {
 471                         if ( !$this->attemptSave() ) {
 472                                 wfProfileOut( __METHOD__."-business-end" );
 473                                 wfProfileOut( __METHOD__ );
 474                                 return;
 475                         }
 476                 }
 477
 478                 # First time through: get contents, set time for conflict
 479                 # checking, etc.
 480                 if ( 'initial' == $this->formtype || $this->firsttime ) {
 481                         if ( $this->initialiseForm() === false ) {
 482                                 $this->noSuchSectionPage();
 483                                 wfProfileOut( __METHOD__."-business-end" );
 484                                 wfProfileOut( __METHOD__ );
 485                                 return;
 486                         }
 487                         if ( !$this->mTitle->getArticleId() )
 488                                 wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
 489                 }
 490
 491                 $this->showEditForm();
 492                 wfProfileOut( __METHOD__."-business-end" );
 493                 wfProfileOut( __METHOD__ );
 494         }
 495
 496         protected function getEditPermissionErrors() {
 497                 global $wgUser;
 498                 $permErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $wgUser );
 499                 # Can this title be created?
 500                 if ( !$this->mTitle->exists() ) {
 501                         $permErrors = array_merge( $permErrors,
 502                                 wfArrayDiff2( $this->mTitle->getUserPermissionsErrors( 'create', $wgUser ), $permErrors ) );
 503                 }
 504                 # Ignore some permissions errors when a user is just previewing/viewing diffs
 505                 $remove = array();
 506                 foreach( $permErrors as $error ) {
 507                         if ( ( $this->preview || $this->diff ) &&
 508                                 ( $error[0] == 'blockedtext' || $error[0] == 'autoblockedtext' ) )
 509                         {
 510                                 $remove[] = $error;
 511                         }
 512                 }
 513                 $permErrors = wfArrayDiff2( $permErrors, $remove );
 514                 return $permErrors;
 515         }
 516
 517         /**
 518          * Show a read-only error
 519          * Parameters are the same as OutputPage:readOnlyPage()
 520          * Redirect to the article page if redlink=1
 521          */
 522         function readOnlyPage( $source = null, $protected = false, $reasons = array(), $action = null ) {
 523                 global $wgRequest, $wgOut;
 524                 if ( $wgRequest->getBool( 'redlink' ) ) {
 525                         // The edit page was reached via a red link.
 526                         // Redirect to the article page and let them click the edit tab if
 527                         // they really want a permission error.
 528                         $wgOut->redirect( $this->mTitle->getFullUrl() );
 529                 } else {
 530                         $wgOut->readOnlyPage( $source, $protected, $reasons, $action );
 531                 }
 532         }
 533
 534         /**
 535          * Should we show a preview when the edit form is first shown?
 536          *
 537          * @return bool
 538          */
 539         protected function previewOnOpen() {
 540                 global $wgRequest, $wgUser;
 541                 if ( $wgRequest->getVal( 'preview' ) == 'yes' ) {
 542                         // Explicit override from request
 543                         return true;
 544                 } elseif ( $wgRequest->getVal( 'preview' ) == 'no' ) {
 545                         // Explicit override from request
 546                         return false;
 547                 } elseif ( $this->section == 'new' ) {
 548                         // Nothing *to* preview for new sections
 549                         return false;
 550                 } elseif ( ( $wgRequest->getVal( 'preload' ) !== null || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
 551                         // Standard preference behaviour
 552                         return true;
 553                 } elseif ( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
 554                         // Categories are special
 555                         return true;
 556                 } else {
 557                         return false;
 558                 }
 559         }
 560
 561         /**
 562          * @todo document
 563          * @param $request
 564          */
 565         function importFormData( &$request ) {
 566                 global $wgLang, $wgUser;
 567
 568                 wfProfileIn( __METHOD__ );
 569
 570                 # Section edit can come from either the form or a link
 571                 $this->section = $request->getVal( 'wpSection', $request->getVal( 'section' ) );
 572
 573                 if ( $request->wasPosted() ) {
 574                         # These fields need to be checked for encoding.
 575                         # Also remove trailing whitespace, but don't remove _initial_
 576                         # whitespace from the text boxes. This may be significant formatting.
 577                         $this->textbox1 = $this->safeUnicodeInput( $request, 'wpTextbox1' );
 578                         $this->textbox2 = $this->safeUnicodeInput( $request, 'wpTextbox2' );
 579                         $this->mMetaData = rtrim( $request->getText( 'metadata' ) );
 580                         # Truncate for whole multibyte characters. +5 bytes for ellipsis
 581                         $this->summary = $wgLang->truncate( $request->getText( 'wpSummary' ), 250, '' );
 582
 583                         # Remove extra headings from summaries and new sections.
 584                         $this->summary = preg_replace('/^\s*=+\s*(.*?)\s*=+\s*$/', '$1', $this->summary);
 585
 586                         $this->edittime = $request->getVal( 'wpEdittime' );
 587                         $this->starttime = $request->getVal( 'wpStarttime' );
 588
 589                         $this->scrolltop = $request->getIntOrNull( 'wpScrolltop' );
 590
 591                         if ( is_null( $this->edittime ) ) {
 592                                 # If the form is incomplete, force to preview.
 593                                 wfDebug( __METHOD__ . ": Form data appears to be incomplete\n" );
 594                                 wfDebug( "POST DATA: " . var_export( $_POST, true ) . "\n" );
 595                                 $this->preview = true;
 596                         } else {
 597                                 /* Fallback for live preview */
 598                                 $this->preview = $request->getCheck( 'wpPreview' ) || $request->getCheck( 'wpLivePreview' );
 599                                 $this->diff = $request->getCheck( 'wpDiff' );
 600
 601                                 // Remember whether a save was requested, so we can indicate
 602                                 // if we forced preview due to session failure.
 603                                 $this->mTriedSave = !$this->preview;
 604
 605                                 if ( $this->tokenOk( $request ) ) {
 606                                         # Some browsers will not report any submit button
 607                                         # if the user hits enter in the comment box.
 608                                         # The unmarked state will be assumed to be a save,
 609                                         # if the form seems otherwise complete.
 610                                         wfDebug( __METHOD__ . ": Passed token check.\n" );
 611                                 } else if ( $this->diff ) {
 612                                         # Failed token check, but only requested "Show Changes".
 613                                         wfDebug( __METHOD__ . ": Failed token check; Show Changes requested.\n" );
 614                                 } else {
 615                                         # Page might be a hack attempt posted from
 616                                         # an external site. Preview instead of saving.
 617                                         wfDebug( __METHOD__ . ": Failed token check; forcing preview\n" );
 618                                         $this->preview = true;
 619                                 }
 620                         }
 621                         $this->save = !$this->preview && !$this->diff;
 622                         if ( !preg_match( '/^\d{14}$/', $this->edittime ) ) {
 623                                 $this->edittime = null;
 624                         }
 625
 626                         if ( !preg_match( '/^\d{14}$/', $this->starttime ) ) {
 627                                 $this->starttime = null;
 628                         }
 629
 630                         $this->recreate  = $request->getCheck( 'wpRecreate' );
 631
 632                         $this->minoredit = $request->getCheck( 'wpMinoredit' );
 633                         $this->watchthis = $request->getCheck( 'wpWatchthis' );
 634
 635                         # Don't force edit summaries when a user is editing their own user or talk page
 636                         if ( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) &&
 637                                 $this->mTitle->getText() == $wgUser->getName() )
 638                         {
 639                                 $this->allowBlankSummary = true;
 640                         } else {
 641                                 $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' ) || !$wgUser->getOption( 'forceeditsummary');
 642                         }
 643
 644                         $this->autoSumm = $request->getText( 'wpAutoSummary' );
 645                 } else {
 646                         # Not a posted form? Start with nothing.
 647                         wfDebug( __METHOD__ . ": Not a posted form.\n" );
 648                         $this->textbox1  = '';
 649                         $this->textbox2  = '';
 650                         $this->mMetaData = '';
 651                         $this->summary   = '';
 652                         $this->edittime  = '';
 653                         $this->starttime = wfTimestampNow();
 654                         $this->edit      = false;
 655                         $this->preview   = false;
 656                         $this->save      = false;
 657                         $this->diff      = false;
 658                         $this->minoredit = false;
 659                         $this->watchthis = false;
 660                         $this->recreate  = false;
 661
 662                         if ( $this->section == 'new' && $request->getVal( 'preloadtitle' ) ) {
 663                                 $this->summary = $request->getVal( 'preloadtitle' );
 664                         }
 665                         elseif ( $this->section != 'new' && $request->getVal( 'summary' ) ) {
 666                                 $this->summary = $request->getText( 'summary' );
 667                         }
 668
 669                         if ( $request->getVal( 'minor' ) ) {
 670                                 $this->minoredit = true;
 671                         }
 672                 }
 673
 674                 // FIXME: unused variable?
 675                 $this->oldid = $request->getInt( 'oldid' );
 676
 677                 $this->live = $request->getCheck( 'live' );
 678                 $this->editintro = $request->getText( 'editintro' );
 679
 680                 wfProfileOut( __METHOD__ );
 681
 682                 // Allow extensions to modify form data
 683                 wfRunHooks( 'EditPage::importFormData', array( $this, $request ) );
 684         }
 685
 686         /**
 687          * Make sure the form isn't faking a user's credentials.
 688          *
 689          * @param $request WebRequest
 690          * @return bool
 691          * @private
 692          */
 693         function tokenOk( &$request ) {
 694                 global $wgUser;
 695                 $token = $request->getVal( 'wpEditToken' );
 696                 $this->mTokenOk = $wgUser->matchEditToken( $token );
 697                 $this->mTokenOkExceptSuffix = $wgUser->matchEditTokenNoSuffix( $token );
 698                 return $this->mTokenOk;
 699         }
 700
 701         /**
 702          * Show all applicable editing introductions
 703          */
 704         protected function showIntro() {
 705                 global $wgOut, $wgUser;
 706                 if ( $this->suppressIntro ) {
 707                         return;
 708                 }
 709
 710                 $namespace = $this->mTitle->getNamespace();
 711
 712                 if ( $namespace == NS_MEDIAWIKI ) {
 713                         # Show a warning if editing an interface message
 714                         $wgOut->wrapWikiMsg( "<div class='mw-editinginterface'>\n$1</div>", 'editinginterface' );
 715                 }
 716
 717                 # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
 718                 if ( $namespace == NS_USER || $namespace == NS_USER_TALK ) {
 719                         $parts = explode( '/', $this->mTitle->getText(), 2 );
 720                         $username = $parts[0];
 721                         $id = User::idFromName( $username );
 722                         $ip = User::isIP( $username );
 723                         if ( $id == 0 && !$ip ) {
 724                                 $wgOut->wrapWikiMsg( '<div class="mw-userpage-userdoesnotexist error">$1</div>',
 725                                         array( 'userpage-userdoesnotexist', $username ) );
 726                         }
 727                 }
 728                 # Try to add a custom edit intro, or use the standard one if this is not possible.
 729                 if ( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
 730                         if ( $wgUser->isLoggedIn() ) {
 731                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletext">$1</div>', 'newarticletext' );
 732                         } else {
 733                                 $wgOut->wrapWikiMsg( '<div class="mw-newarticletextanon">$1</div>', 'newarticletextanon' );
 734                         }
 735                 }
 736                 # Give a notice if the user is editing a deleted/moved page...
 737                 if ( !$this->mTitle->exists() ) {
 738                         LogEventsList::showLogExtract( $wgOut, array( 'delete', 'move' ), $this->mTitle->getPrefixedText(),
 739                                 '', array( 'lim' => 10,
 740                                            'conds' => array( "log_action != 'revision'" ),
 741                                            'showIfEmpty' => false,
 742                                            'msgKey' => array( 'recreate-moveddeleted-warn') )
 743                         );
 744                 }
 745         }
 746
 747         /**
 748          * Attempt to show a custom editing introduction, if supplied
 749          *
 750          * @return bool
 751          */
 752         protected function showCustomIntro() {
 753                 if ( $this->editintro ) {
 754                         $title = Title::newFromText( $this->editintro );
 755                         if ( $title instanceof Title && $title->exists() && $title->userCanRead() ) {
 756                                 global $wgOut;
 757                                 $revision = Revision::newFromTitle( $title );
 758                                 $wgOut->addWikiTextTitleTidy( $revision->getText(), $this->mTitle );
 759                                 return true;
 760                         } else {
 761                                 return false;
 762                         }
 763                 } else {
 764                         return false;
 765                 }
 766         }
 767
 768         /**
 769          * Attempt submission (no UI)
 770          * @return one of the constants describing the result
 771          */
 772         function internalAttemptSave( &$result, $bot = false ) {
 773                 global $wgFilterCallback, $wgUser, $wgOut, $wgParser;
 774                 global $wgMaxArticleSize;
 775
 776                 wfProfileIn( __METHOD__  );
 777                 wfProfileIn( __METHOD__ . '-checks' );
 778
 779                 if ( !wfRunHooks( 'EditPage::attemptSave', array( $this ) ) )
 780                 {
 781                         wfDebug( "Hook 'EditPage::attemptSave' aborted article saving\n" );
 782                         return self::AS_HOOK_ERROR;
 783                 }
 784
 785                 # Check image redirect
 786                 if ( $this->mTitle->getNamespace() == NS_FILE &&
 787                         Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
 788                         !$wgUser->isAllowed( 'upload' ) ) {
 789                                 if ( $wgUser->isAnon() ) {
 790                                         return self::AS_IMAGE_REDIRECT_ANON;
 791                                 } else {
 792                                         return self::AS_IMAGE_REDIRECT_LOGGED;
 793                                 }
 794                 }
 795
 796                 # Reintegrate metadata
 797                 if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
 798                 $this->mMetaData = '' ;
 799
 800                 # Check for spam
 801                 $match = self::matchSummarySpamRegex( $this->summary );
 802                 if ( $match === false ) {
 803                         $match = self::matchSpamRegex( $this->textbox1 );
 804                 }
 805                 if ( $match !== false ) {
 806                         $result['spam'] = $match;
 807                         $ip = wfGetIP();
 808                         $pdbk = $this->mTitle->getPrefixedDBkey();
 809                         $match = str_replace( "\n", '', $match );
 810                         wfDebugLog( 'SpamRegex', "$ip spam regex hit [[$pdbk]]: \"$match\"" );
 811                         wfProfileOut( __METHOD__ . '-checks' );
 812                         wfProfileOut( __METHOD__ );
 813                         return self::AS_SPAM_ERROR;
 814                 }
 815                 if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section, $this->hookError, $this->summary ) ) {
 816                         # Error messages or other handling should be performed by the filter function
 817                         wfProfileOut( __METHOD__ . '-checks' );
 818                         wfProfileOut( __METHOD__ );
 819                         return self::AS_FILTERING;
 820                 }
 821                 if ( !wfRunHooks( 'EditFilter', array( $this, $this->textbox1, $this->section, &$this->hookError, $this->summary ) ) ) {
 822                         # Error messages etc. could be handled within the hook...
 823                         wfProfileOut( __METHOD__ . '-checks' );
 824                         wfProfileOut( __METHOD__ );
 825                         return self::AS_HOOK_ERROR;
 826                 } elseif ( $this->hookError != '' ) {
 827                         # ...or the hook could be expecting us to produce an error
 828                         wfProfileOut( __METHOD__ . '-checks' );
 829                         wfProfileOut( __METHOD__ );
 830                         return self::AS_HOOK_ERROR_EXPECTED;
 831                 }
 832                 if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
 833                         # Check block state against master, thus 'false'.
 834                         wfProfileOut( __METHOD__ . '-checks' );
 835                         wfProfileOut( __METHOD__ );
 836                         return self::AS_BLOCKED_PAGE_FOR_USER;
 837                 }
 838                 $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
 839                 if ( $this->kblength > $wgMaxArticleSize ) {
 840                         // Error will be displayed by showEditForm()
 841                         $this->tooBig = true;
 842                         wfProfileOut( __METHOD__ . '-checks' );
 843                         wfProfileOut( __METHOD__ );
 844                         return self::AS_CONTENT_TOO_BIG;
 845                 }
 846
 847                 if ( !$wgUser->isAllowed( 'edit' ) ) {
 848                         if ( $wgUser->isAnon() ) {
 849                                 wfProfileOut( __METHOD__ . '-checks' );
 850                                 wfProfileOut( __METHOD__ );
 851                                 return self::AS_READ_ONLY_PAGE_ANON;
 852                         } else {
 853                                 wfProfileOut( __METHOD__ . '-checks' );
 854                                 wfProfileOut( __METHOD__ );
 855                                 return self::AS_READ_ONLY_PAGE_LOGGED;
 856                         }
 857                 }
 858
 859                 if ( wfReadOnly() ) {
 860                         wfProfileOut( __METHOD__ . '-checks' );
 861                         wfProfileOut( __METHOD__ );
 862                         return self::AS_READ_ONLY_PAGE;
 863                 }
 864                 if ( $wgUser->pingLimiter() ) {
 865                         wfProfileOut( __METHOD__ . '-checks' );
 866                         wfProfileOut( __METHOD__ );
 867                         return self::AS_RATE_LIMITED;
 868                 }
 869
 870                 # If the article has been deleted while editing, don't save it without
 871                 # confirmation
 872                 if ( $this->wasDeletedSinceLastEdit() && !$this->recreate ) {
 873                         wfProfileOut( __METHOD__ . '-checks' );
 874                         wfProfileOut( __METHOD__ );
 875                         return self::AS_ARTICLE_WAS_DELETED;
 876                 }
 877
 878                 wfProfileOut( __METHOD__ . '-checks' );
 879
 880                 # If article is new, insert it.
 881                 $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
 882                 if ( 0 == $aid ) {
 883                         // Late check for create permission, just in case *PARANOIA*
 884                         if ( !$this->mTitle->userCan( 'create' ) ) {
 885                                 wfDebug( __METHOD__ . ": no create permission\n" );
 886                                 wfProfileOut( __METHOD__ );
 887                                 return self::AS_NO_CREATE_PERMISSION;
 888                         }
 889
 890                         # Don't save a new article if it's blank.
 891                         if ( '' == $this->textbox1 ) {
 892                                 wfProfileOut( __METHOD__ );
 893                                 return self::AS_BLANK_ARTICLE;
 894                         }
 895
 896                         // Run post-section-merge edit filter
 897                         if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError, $this->summary ) ) ) {
 898                                 # Error messages etc. could be handled within the hook...
 899                                 wfProfileOut( __METHOD__ );
 900                                 return self::AS_HOOK_ERROR;
 901                         } elseif ( $this->hookError != '' ) {
 902                                 # ...or the hook could be expecting us to produce an error
 903                                 wfProfileOut( __METHOD__ );
 904                                 return self::AS_HOOK_ERROR_EXPECTED;
 905                         }
 906
 907                         # Handle the user preference to force summaries here. Check if it's not a redirect.
 908                         if ( !$this->allowBlankSummary && !Title::newFromRedirect( $this->textbox1 ) ) {
 909                                 if ( md5( $this->summary ) == $this->autoSumm ) {
 910                                         $this->missingSummary = true;
 911                                         wfProfileOut( __METHOD__ );
 912                                         return self::AS_SUMMARY_NEEDED;
 913                                 }
 914                         }
 915
 916                         $isComment = ( $this->section == 'new' );
 917
 918                         $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
 919                                 $this->minoredit, $this->watchthis, false, $isComment, $bot );
 920
 921                         wfProfileOut( __METHOD__ );
 922                         return self::AS_SUCCESS_NEW_ARTICLE;
 923                 }
 924
 925                 # Article exists. Check for edit conflict.
 926
 927                 $this->mArticle->clear(); # Force reload of dates, etc.
 928                 $this->mArticle->forUpdate( true ); # Lock the article
 929
 930                 wfDebug( "timestamp: {$this->mArticle->getTimestamp()}, edittime: {$this->edittime}\n" );
 931
 932                 if ( $this->mArticle->getTimestamp() != $this->edittime ) {
 933                         $this->isConflict = true;
 934                         if ( $this->section == 'new' ) {
 935                                 if ( $this->mArticle->getUserText() == $wgUser->getName() &&
 936                                         $this->mArticle->getComment() == $this->summary ) {
 937                                         // Probably a duplicate submission of a new comment.
 938                                         // This can happen when squid resends a request after
 939                                         // a timeout but the first one actually went through.
 940                                         wfDebug( __METHOD__ . ": duplicate new section submission; trigger edit conflict!\n" );
 941                                 } else {
 942                                         // New comment; suppress conflict.
 943                                         $this->isConflict = false;
 944                                         wfDebug( __METHOD__ .": conflict suppressed; new section\n" );
 945                                 }
 946                         }
 947                 }
 948                 $userid = $wgUser->getId();
 949
 950                 # Suppress edit conflict with self, except for section edits where merging is required.
 951                 if ( $this->isConflict && $this->section == '' && $this->userWasLastToEdit( $userid, $this->edittime ) ) {
 952                         wfDebug( __METHOD__ . ": Suppressing edit conflict, same user.\n" );
 953                         $this->isConflict = false;
 954                 }
 955
 956                 if ( $this->isConflict ) {
 957                         wfDebug( __METHOD__ . ": conflict! getting section '$this->section' for time '$this->edittime' (article time '" .
 958                                 $this->mArticle->getTimestamp() . "')\n" );
 959                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary, $this->edittime );
 960                 } else {
 961                         wfDebug( __METHOD__ . ": getting section '$this->section'\n" );
 962                         $text = $this->mArticle->replaceSection( $this->section, $this->textbox1, $this->summary );
 963                 }
 964                 if ( is_null( $text ) ) {
 965                         wfDebug( __METHOD__ . ": activating conflict; section replace failed.\n" );
 966                         $this->isConflict = true;
 967                         $text = $this->textbox1; // do not try to merge here!
 968                 } else if ( $this->isConflict ) {
 969                         # Attempt merge
 970                         if ( $this->mergeChangesInto( $text ) ) {
 971                                 // Successful merge! Maybe we should tell the user the good news?
 972                                 $this->isConflict = false;
 973                                 wfDebug( __METHOD__ . ": Suppressing edit conflict, successful merge.\n" );
 974                         } else {
 975                                 $this->section = '';
 976                                 $this->textbox1 = $text;
 977                                 wfDebug( __METHOD__ . ": Keeping edit conflict, failed merge.\n" );
 978                         }
 979                 }
 980
 981                 if ( $this->isConflict ) {
 982                         wfProfileOut( __METHOD__ );
 983                         return self::AS_CONFLICT_DETECTED;
 984                 }
 985
 986                 $oldtext = $this->mArticle->getContent();
 987
 988                 // Run post-section-merge edit filter
 989                 if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError, $this->summary ) ) ) {
 990                         # Error messages etc. could be handled within the hook...
 991                         wfProfileOut( __METHOD__ );
 992                         return self::AS_HOOK_ERROR;
 993                 } elseif ( $this->hookError != '' ) {
 994                         # ...or the hook could be expecting us to produce an error
 995                         wfProfileOut( __METHOD__ );
 996                         return self::AS_HOOK_ERROR_EXPECTED;
 997                 }
 998
 999                 # Handle the user preference to force summaries here, but not for null edits
1000                 if ( $this->section != 'new' && !$this->allowBlankSummary && 0 != strcmp( $oldtext, $text )
1001                         && !Title::newFromRedirect( $text ) ) # check if it's not a redirect
1002                 {
1003                         if ( md5( $this->summary ) == $this->autoSumm ) {
1004                                 $this->missingSummary = true;
1005                                 wfProfileOut( __METHOD__ );
1006                                 return self::AS_SUMMARY_NEEDED;
1007                         }
1008                 }
1009
1010                 # And a similar thing for new sections
1011                 if ( $this->section == 'new' && !$this->allowBlankSummary ) {
1012                         if ( trim( $this->summary ) == '' ) {
1013                                 $this->missingSummary = true;
1014                                 wfProfileOut( __METHOD__ );
1015                                 return self::AS_SUMMARY_NEEDED;
1016                         }
1017                 }
1018
1019                 # All's well
1020                 wfProfileIn( __METHOD__ . '-sectionanchor' );
1021                 $sectionanchor = '';
1022                 if ( $this->section == 'new' ) {
1023                         if ( $this->textbox1 == '' ) {
1024                                 $this->missingComment = true;
1025                                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1026                                 wfProfileOut( __METHOD__ );
1027                                 return self::AS_TEXTBOX_EMPTY;
1028                         }
1029                         if ( $this->summary != '' ) {
1030                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $this->summary );
1031                                 # This is a new section, so create a link to the new section
1032                                 # in the revision summary.
1033                                 $cleanSummary = $wgParser->stripSectionName( $this->summary );
1034                                 $this->summary = wfMsgForContent( 'newsectionsummary', $cleanSummary );
1035                         }
1036                 } elseif ( $this->section != '' ) {
1037                         # Try to get a section anchor from the section source, redirect to edited section if header found
1038                         # XXX: might be better to integrate this into Article::replaceSection
1039                         # for duplicate heading checking and maybe parsing
1040                         $hasmatch = preg_match( "/^ *([=]{1,6})(.*?)(\\1) *\\n/i", $this->textbox1, $matches );
1041                         # we can't deal with anchors, includes, html etc in the header for now,
1042                         # headline would need to be parsed to improve this
1043                         if ( $hasmatch and strlen( $matches[2] ) > 0 ) {
1044                                 $sectionanchor = $wgParser->guessSectionNameFromWikiText( $matches[2] );
1045                         }
1046                 }
1047                 wfProfileOut( __METHOD__ . '-sectionanchor' );
1048
1049                 // Save errors may fall down to the edit form, but we've now
1050                 // merged the section into full text. Clear the section field
1051                 // so that later submission of conflict forms won't try to
1052                 // replace that into a duplicated mess.
1053                 $this->textbox1 = $text;
1054                 $this->section = '';
1055
1056                 // Check for length errors again now that the section is merged in
1057                 $this->kblength = (int)( strlen( $text ) / 1024 );
1058                 if ( $this->kblength > $wgMaxArticleSize ) {
1059                         $this->tooBig = true;
1060                         wfProfileOut( __METHOD__ );
1061                         return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
1062                 }
1063
1064                 # update the article here
1065                 if ( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
1066                         $this->watchthis, $bot, $sectionanchor ) )
1067                 {
1068                         wfProfileOut( __METHOD__ );
1069                         return self::AS_SUCCESS_UPDATE;
1070                 } else {
1071                         $this->isConflict = true;
1072                 }
1073                 wfProfileOut( __METHOD__ );
1074                 return self::AS_END;
1075         }
1076
1077         /**
1078          * Check if no edits were made by other users since
1079          * the time a user started editing the page. Limit to
1080          * 50 revisions for the sake of performance.
1081          */
1082         protected function userWasLastToEdit( $id, $edittime ) {
1083                 if( !$id ) return false;
1084                 $dbw = wfGetDB( DB_MASTER );
1085                 $res = $dbw->select( 'revision',
1086                         'rev_user',
1087                         array(
1088                                 'rev_page' => $this->mArticle->getId(),
1089                                 'rev_timestamp > '.$dbw->addQuotes( $dbw->timestamp($edittime) )
1090                         ),
1091                         __METHOD__,
1092                         array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 50 ) );
1093                 while( $row = $res->fetchObject() ) {
1094                         if( $row->rev_user != $id ) {
1095                                 return false;
1096                         }
1097                 }
1098                 return true;
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 matchSpamRegex( $text ) {
1106                 global $wgSpamRegex;
1107                 // For back compatibility, $wgSpamRegex may be a single string or an array of regexes.
1108                 $regexes = (array)$wgSpamRegex;
1109                 return self::matchSpamRegexInternal( $text, $regexes );
1110         }
1111
1112         /**
1113          * Check given input text against $wgSpamRegex, and return the text of the first match.
1114          * @return mixed -- matching string or false
1115          */
1116         public static function matchSummarySpamRegex( $text ) {
1117                 global $wgSummarySpamRegex;
1118                 $regexes = (array)$wgSummarySpamRegex;
1119                 return self::matchSpamRegexInternal( $text, $regexes );
1120         }
1121
1122         protected static function matchSpamRegexInternal( $text, $regexes ) {
1123                 foreach( $regexes as $regex ) {
1124                         $matches = array();
1125                         if( preg_match( $regex, $text, $matches ) ) {
1126                                 return $matches[0];
1127                         }
1128                 }
1129                 return false;
1130         }
1131
1132         /**
1133          * Initialise form fields in the object
1134          * Called on the first invocation, e.g. when a user clicks an edit link
1135          */
1136         function initialiseForm() {
1137                 $this->edittime = $this->mArticle->getTimestamp();
1138                 $this->textbox1 = $this->getContent( false );
1139                 if ( $this->textbox1 === false ) return false;
1140                 wfProxyCheck();
1141                 return true;
1142         }
1143
1144         function setHeaders() {
1145                 global $wgOut, $wgTitle;
1146                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1147                 if ( $this->formtype == 'preview' ) {
1148                         $wgOut->setPageTitleActionText( wfMsg( 'preview' ) );
1149                 }
1150                 if ( $this->isConflict ) {
1151                         $wgOut->setPageTitle( wfMsg( 'editconflict', $wgTitle->getPrefixedText() ) );
1152                 } elseif ( $this->section != '' ) {
1153                         $msg = $this->section == 'new' ? 'editingcomment' : 'editingsection';
1154                         $wgOut->setPageTitle( wfMsg( $msg, $wgTitle->getPrefixedText() ) );
1155                 } else {
1156                         # Use the title defined by DISPLAYTITLE magic word when present
1157                         if ( isset( $this->mParserOutput )
1158                          && ( $dt = $this->mParserOutput->getDisplayTitle() ) !== false ) {
1159                                 $title = $dt;
1160                         } else {
1161                                 $title = $wgTitle->getPrefixedText();
1162                         }
1163                         $wgOut->setPageTitle( wfMsg( 'editing', $title ) );
1164                 }
1165         }
1166
1167         /**
1168          * Send the edit form and related headers to $wgOut
1169          * @param $formCallback Optional callable that takes an OutputPage
1170          *                      parameter; will be called during form output
1171          *                      near the top, for captchas and the like.
1172          */
1173         function showEditForm( $formCallback=null ) {
1174                 global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle, $wgRequest;
1175
1176                 # If $wgTitle is null, that means we're in API mode.
1177                 # Some hook probably called this function  without checking
1178                 # for is_null($wgTitle) first. Bail out right here so we don't
1179                 # do lots of work just to discard it right after.
1180                 if ( is_null( $wgTitle ) )
1181                         return;
1182
1183                 wfProfileIn( __METHOD__ );
1184
1185                 $sk = $wgUser->getSkin();
1186
1187                 #need to parse the preview early so that we know which templates are used,
1188                 #otherwise users with "show preview after edit box" will get a blank list
1189                 #we parse this near the beginning so that setHeaders can do the title
1190                 #setting work instead of leaving it in getPreviewText
1191                 $previewOutput = '';
1192                 if ( $this->formtype == 'preview' ) {
1193                         $previewOutput = $this->getPreviewText();
1194                 }
1195
1196                 wfRunHooks( 'EditPage::showEditForm:initial', array( &$this ) );
1197
1198                 $this->setHeaders();
1199
1200                 # Enabled article-related sidebar, toplinks, etc.
1201                 $wgOut->setArticleRelated( true );
1202
1203                 $cancelParams = array();
1204
1205                 if ( $this->isConflict ) {
1206                         $wgOut->wrapWikiMsg( "<div class='mw-explainconflict'>\n$1</div>", 'explainconflict' );
1207
1208                         $this->textbox2 = $this->textbox1;
1209                         $this->textbox1 = $this->getContent();
1210                         $this->edittime = $this->mArticle->getTimestamp();
1211                 } else {
1212                         if ( $this->section != '' && $this->section != 'new' ) {
1213                                 $matches = array();
1214                                 if ( !$this->summary && !$this->preview && !$this->diff ) {
1215                                         preg_match( "/^(=+)(.+)\\1/mi", $this->textbox1, $matches );
1216                                         if ( !empty( $matches[2] ) ) {
1217                                                 global $wgParser;
1218                                                 $this->summary = "/* " .
1219                                                         $wgParser->stripSectionName(trim($matches[2])) .
1220                                                         " */ ";
1221                                         }
1222                                 }
1223                         }
1224
1225                         if ( $this->missingComment ) {
1226                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommenttext">$1</div>', 'missingcommenttext' );
1227                         }
1228
1229                         if ( $this->missingSummary && $this->section != 'new' ) {
1230                                 $wgOut->wrapWikiMsg( '<div id="mw-missingsummary">$1</div>', 'missingsummary' );
1231                         }
1232
1233                         if ( $this->missingSummary && $this->section == 'new' ) {
1234                                 $wgOut->wrapWikiMsg( '<div id="mw-missingcommentheader">$1</div>', 'missingcommentheader' );
1235                         }
1236
1237                         if ( $this->hookError !== '' ) {
1238                                 $wgOut->addWikiText( $this->hookError );
1239                         }
1240
1241                         if ( !$this->checkUnicodeCompliantBrowser() ) {
1242                                 $wgOut->addWikiMsg( 'nonunicodebrowser' );
1243                         }
1244                         if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
1245                         // Let sysop know that this will make private content public if saved
1246
1247                                 if ( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
1248                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-permission' );
1249                                 } else if ( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
1250                                         $wgOut->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1</div>\n", 'rev-deleted-text-view' );
1251                                 }
1252
1253                                 if ( !$this->mArticle->mRevision->isCurrent() ) {
1254                                         $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
1255                                         $cancelParams['oldid'] = $this->mArticle->mRevision->getId();
1256                                         $wgOut->addWikiMsg( 'editingold' );
1257                                 }
1258                         }
1259                 }
1260
1261                 if ( wfReadOnly() ) {
1262                         $wgOut->wrapWikiMsg( "<div id=\"mw-read-only-warning\">\n$1\n</div>", array( 'readonlywarning', wfReadOnlyReason() ) );
1263                 } elseif ( $wgUser->isAnon() && $this->formtype != 'preview' ) {
1264                         $wgOut->wrapWikiMsg( '<div id="mw-anon-edit-warning">$1</div>', 'anoneditwarning' );
1265                 } else {
1266                         if ( $this->isCssJsSubpage ) {
1267                                 # Check the skin exists
1268                                 if ( !$this->isValidCssJsSubpage ) {
1269                                         $wgOut->addWikiMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() );
1270                                 }
1271                                 if ( $this->formtype !== 'preview' ) {
1272                                         if ( $this->isCssSubpage )
1273                                                 $wgOut->addWikiMsg( 'usercssyoucanpreview' );
1274                                         if ( $this->isJsSubpage )
1275                                                 $wgOut->addWikiMsg( 'userjsyoucanpreview' );
1276                                 }
1277                         }
1278                 }
1279
1280                 $classes = array(); // Textarea CSS
1281                 if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1282                 } elseif ( $this->mTitle->isProtected( 'edit' ) ) {
1283                         # Is the title semi-protected?
1284                         if ( $this->mTitle->isSemiProtected() ) {
1285                                 $noticeMsg = 'semiprotectedpagewarning';
1286                                 $classes[] = 'mw-textarea-sprotected';
1287                         } else {
1288                                 # Then it must be protected based on static groups (regular)
1289                                 $noticeMsg = 'protectedpagewarning';
1290                                 $classes[] = 'mw-textarea-protected';
1291                         }
1292                         LogEventsList::showLogExtract( $wgOut, 'protect', $this->mTitle->getPrefixedText(), '',
1293                                 array( 'lim' => 1, 'msgKey' => array( $noticeMsg ) ) );
1294                 }
1295                 if ( $this->mTitle->isCascadeProtected() ) {
1296                         # Is this page under cascading protection from some source pages?
1297                         list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
1298                         $notice = "<div class='mw-cascadeprotectedwarning'>$1\n";
1299                         $cascadeSourcesCount = count( $cascadeSources );
1300                         if ( $cascadeSourcesCount > 0 ) {
1301                                 # Explain, and list the titles responsible
1302                                 foreach( $cascadeSources as $page ) {
1303                                         $notice .= '* [[:' . $page->getPrefixedText() . "]]\n";
1304                                 }
1305                         }
1306                         $notice .= '</div>';
1307                         $wgOut->wrapWikiMsg( $notice, array( 'cascadeprotectedwarning', $cascadeSourcesCount ) );
1308                 }
1309                 if ( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) ) {
1310                         $wgOut->wrapWikiMsg( '<div class="mw-titleprotectedwarning">$1</div>', 'titleprotectedwarning' );
1311                 }
1312
1313                 if ( $this->kblength === false ) {
1314                         $this->kblength = (int)( strlen( $this->textbox1 ) / 1024 );
1315                 }
1316                 if ( $this->tooBig || $this->kblength > $wgMaxArticleSize ) {
1317                         $wgOut->addHTML( "<div class='error' id='mw-edit-longpageerror'>\n" );
1318                         $wgOut->addWikiMsg( 'longpageerror', $wgLang->formatNum( $this->kblength ), $wgLang->formatNum( $wgMaxArticleSize ) );
1319                         $wgOut->addHTML( "</div>\n" );
1320                 } elseif ( $this->kblength > 29 ) {
1321                         $wgOut->addHTML( "<div id='mw-edit-longpagewarning'>\n" );
1322                         $wgOut->addWikiMsg( 'longpagewarning', $wgLang->formatNum( $this->kblength ) );
1323                         $wgOut->addHTML( "</div>\n" );
1324                 }
1325
1326                 $action = $wgTitle->escapeLocalURL( array( 'action' => $this->action ) );
1327
1328                 $summary = wfMsgExt( 'summary', 'parseinline' );
1329                 $subject = wfMsgExt( 'subject', 'parseinline' );
1330
1331                 $cancel = $sk->link(
1332                         $wgTitle,
1333                         wfMsgExt( 'cancel', array( 'parseinline' ) ),
1334                         array( 'id' => 'mw-editform-cancel' ),
1335                         $cancelParams,
1336                         array( 'known', 'noclasses' )
1337                 );
1338                 $separator = wfMsgExt( 'pipe-separator' , 'escapenoentities' );
1339                 $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ) );
1340                 $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
1341                         htmlspecialchars( wfMsg( 'edithelp' ) ).'</a> '.
1342                         htmlspecialchars( wfMsg( 'newwindow' ) );
1343
1344                 global $wgRightsText;
1345                 if ( $wgRightsText ) {
1346                         $copywarnMsg = array( 'copyrightwarning',
1347                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]',
1348                                 $wgRightsText );
1349                 } else {
1350                         $copywarnMsg = array( 'copyrightwarning2',
1351                                 '[[' . wfMsgForContent( 'copyrightpage' ) . ']]' );
1352                 }
1353                 // Allow for site and per-namespace customization of contribution/copyright notice.
1354                 wfRunHooks( 'EditPageCopyrightWarning', array( $this->mTitle, &$copywarnMsg ) );
1355
1356                 if ( $wgUser->getOption( 'showtoolbar' ) and !$this->isCssJsSubpage ) {
1357                         # prepare toolbar for edit buttons
1358                         $toolbar = EditPage::getEditToolbar();
1359                 } else {
1360                         $toolbar = '';
1361                 }
1362
1363
1364                 // activate checkboxes if user wants them to be always active
1365                 if ( !$this->preview && !$this->diff ) {
1366                         # Sort out the "watch" checkbox
1367                         if ( $wgUser->getOption( 'watchdefault' ) ) {
1368                                 # Watch all edits
1369                                 $this->watchthis = true;
1370                         } elseif ( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
1371                                 # Watch creations
1372                                 $this->watchthis = true;
1373                         } elseif ( $this->mTitle->userIsWatching() ) {
1374                                 # Already watched
1375                                 $this->watchthis = true;
1376                         }
1377
1378                         # May be overriden by request parameters
1379                         if( $wgRequest->getBool( 'watchthis' ) ) {
1380                                 $this->watchthis = true;
1381                         }
1382
1383                         if ( $wgUser->getOption( 'minordefault' ) ) $this->minoredit = true;
1384                 }
1385
1386                 $wgOut->addHTML( $this->editFormPageTop );
1387
1388                 if ( $wgUser->getOption( 'previewontop' ) ) {
1389                         $this->displayPreviewArea( $previewOutput, true );
1390                 }
1391
1392
1393                 $wgOut->addHTML( $this->editFormTextTop );
1394
1395                 # if this is a comment, show a subject line at the top, which is also the edit summary.
1396                 # Otherwise, show a summary field at the bottom
1397                 $summarytext = $wgContLang->recodeForEdit( $this->summary );
1398
1399                 # If a blank edit summary was previously provided, and the appropriate
1400                 # user preference is active, pass a hidden tag as wpIgnoreBlankSummary. This will stop the
1401                 # user being bounced back more than once in the event that a summary
1402                 # is not required.
1403                 #####
1404                 # For a bit more sophisticated detection of blank summaries, hash the
1405                 # automatic one and pass that in the hidden field wpAutoSummary.
1406                 $summaryhiddens =  '';
1407                 if ( $this->missingSummary ) $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true );
1408                 $autosumm = $this->autoSumm ? $this->autoSumm : md5( $this->summary );
1409                 $summaryhiddens .= Xml::hidden( 'wpAutoSummary', $autosumm );
1410                 if ( $this->section == 'new' ) {
1411                         $commentsubject = '';
1412                         if ( !$wgRequest->getBool( 'nosummary' ) ) {
1413                                 # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1414                                 $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1415
1416                                 $commentsubject =
1417                                         Xml::tags( 'label', array( 'for' => 'wpSummary' ), $subject );
1418                                 $commentsubject =
1419                                         Xml::tags( 'span', array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1420                                                 $commentsubject );
1421                                 $commentsubject .= '&nbsp;';
1422                                 $commentsubject .= Xml::input( 'wpSummary',
1423                                                                         60,
1424                                                                         $summarytext,
1425                                                                         array(
1426                                                                                 'id' => 'wpSummary',
1427                                                                                 'maxlength' => '200',
1428                                                                                 'tabindex' => '1'
1429                                                                         ) );
1430                         } else {
1431                                 $summaryhiddens .= Xml::hidden( 'wpIgnoreBlankSummary', true ); # bug 18699
1432                         }
1433                         $editsummary = "<div class='editOptions'>\n";
1434                         global $wgParser;
1435                         $formattedSummary = wfMsgForContent( 'newsectionsummary', $wgParser->stripSectionName( $this->summary ) );
1436                         $subjectpreview = $summarytext && ( $this->preview || $this->diff ) ?
1437                                 "<div class=\"mw-summary-preview\">". wfMsgExt( 'subject-preview', 'parseinline' ) . $sk->commentBlock( $formattedSummary, $this->mTitle, true )."</div>\n" : '';
1438                         $summarypreview = '';
1439                 } else {
1440                         $commentsubject = '';
1441
1442                         # Add a class if 'missingsummary' is triggered to allow styling of the summary line
1443                         $summaryClass = $this->missingSummary ? 'mw-summarymissed' : 'mw-summary';
1444
1445                         $editsummary = Xml::tags( 'label', array( 'for' => 'wpSummary' ), $summary );
1446                         $editsummary = Xml::tags( 'span',  array( 'class' => $summaryClass, 'id' => "wpSummaryLabel" ),
1447                                         $editsummary ) . ' ';
1448
1449                         $editsummary .= Xml::input( 'wpSummary',
1450                                 60,
1451                                 $summarytext,
1452                                 array(
1453                                         'id' => 'wpSummary',
1454                                         'maxlength' => '200',
1455                                         'tabindex' => '1'
1456                                 ) );
1457
1458                         // No idea where this is closed.
1459                         $editsummary .= '<br/>';
1460                         $editsummary = Xml::openElement( 'div', array( 'class' => 'editOptions' ) )
1461                                         . ($this->mShowSummaryField ? $editsummary : '');
1462
1463                         $summarypreview = '';
1464                         if ( $summarytext && ( $this->preview || $this->diff ) ) {
1465                                 $summarypreview =
1466                                         Xml::tags( 'div',
1467                                                 array( 'class' => 'mw-summary-preview' ),
1468                                                 wfMsgExt( 'summary-preview', 'parseinline' ) .
1469                                                         $sk->commentBlock( $this->summary, $this->mTitle )
1470                                         );
1471                         }
1472                         $subjectpreview = '';
1473                 }
1474                 $commentsubject .= $summaryhiddens;
1475
1476                 # Set focus to the edit box on load, except on preview or diff, where it would interfere with the display
1477                 if ( !$this->preview && !$this->diff ) {
1478                         $wgOut->setOnloadHandler( 'document.editform.wpTextbox1.focus()' );
1479                 }
1480                 $templates = $this->getTemplates();
1481                 $formattedtemplates = $sk->formatTemplates( $templates, $this->preview, $this->section != '');
1482
1483                 $hiddencats = $this->mArticle->getHiddenCategories();
1484                 $formattedhiddencats = $sk->formatHiddenCategories( $hiddencats );
1485
1486                 global $wgUseMetadataEdit ;
1487                 if ( $wgUseMetadataEdit ) {
1488                         $metadata = $this->mMetaData ;
1489                         $metadata = htmlspecialchars( $wgContLang->recodeForEdit( $metadata ) ) ;
1490                         $top = wfMsgWikiHtml( 'metadata_help' );
1491                         /* ToDo: Replace with clean code */
1492                         $ew = $wgUser->getOption( 'editwidth' );
1493                         if ( $ew ) $ew = " style=\"width:100%\"";
1494                         else $ew = '';
1495                         $cols = $wgUser->getIntOption( 'cols' );
1496                         /* /ToDo */
1497                         $metadata = $top . "<textarea name='metadata' rows='3' cols='{$cols}'{$ew}>{$metadata}</textarea>" ;
1498                 }
1499                 else $metadata = "" ;
1500
1501                 $recreate = '';
1502                 if ( $this->wasDeletedSinceLastEdit() ) {
1503                         if ( 'save' != $this->formtype ) {
1504                                 $wgOut->wrapWikiMsg(
1505                                         "<div class='error mw-deleted-while-editing'>\n$1</div>",
1506                                         'deletedwhileediting' );
1507                         } else {
1508                                 // Hide the toolbar and edit area, user can click preview to get it back
1509                                 // Add an confirmation checkbox and explanation.
1510                                 $toolbar = '';
1511                                 $recreate = '<div class="mw-confirm-recreate">' .
1512                                                 $wgOut->parse( wfMsg( 'confirmrecreate',  $this->lastDelete->user_name , $this->lastDelete->log_comment ) ) .
1513                                                 Xml::checkLabel( wfMsg( 'recreate' ), 'wpRecreate', 'wpRecreate', false,
1514                                                         array( 'title' => $sk->titleAttrib( 'recreate' ), 'tabindex' => 1, 'id' => 'wpRecreate' )
1515                                                 ) . '</div>';
1516                         }
1517                 }
1518
1519                 $tabindex = 2;
1520
1521                 $checkboxes = $this->getCheckboxes( $tabindex, $sk,
1522                         array( 'minor' => $this->minoredit, 'watch' => $this->watchthis ) );
1523
1524                 $checkboxhtml = implode( $checkboxes, "\n" );
1525
1526                 $buttons = $this->getEditButtons( $tabindex );
1527                 $buttonshtml = implode( $buttons, "\n" );
1528
1529                 $safemodehtml = $this->checkUnicodeCompliantBrowser()
1530                         ? '' : Xml::hidden( 'safemode', '1' );
1531
1532                 $wgOut->addHTML( <<<END
1533 {$toolbar}
1534 <form id="editform" name="editform" method="post" action="$action" enctype="multipart/form-data">
1535 END
1536 );
1537
1538                 if ( is_callable( $formCallback ) ) {
1539                         call_user_func_array( $formCallback, array( &$wgOut ) );
1540                 }
1541
1542                 wfRunHooks( 'EditPage::showEditForm:fields', array( &$this, &$wgOut ) );
1543
1544                 // Put these up at the top to ensure they aren't lost on early form submission
1545                 $this->showFormBeforeText();
1546
1547                 $wgOut->addHTML( <<<END
1548 {$recreate}
1549 {$commentsubject}
1550 {$subjectpreview}
1551 {$this->editFormTextBeforeContent}
1552 END
1553 );
1554                 $this->showTextbox1( $classes );
1555
1556                 $wgOut->addHTML( $this->editFormTextAfterContent );
1557
1558                 $wgOut->wrapWikiMsg( "<div id=\"editpage-copywarn\">\n$1\n</div>", $copywarnMsg );
1559                 $wgOut->addHTML( <<<END
1560 {$this->editFormTextAfterWarn}
1561 {$metadata}
1562 {$editsummary}
1563 {$summarypreview}
1564 {$checkboxhtml}
1565 {$safemodehtml}
1566 END
1567 );
1568
1569                 $wgOut->addHTML(
1570 "<div class='editButtons'>
1571 {$buttonshtml}
1572         <span class='editHelp'>{$cancel}{$separator}{$edithelp}</span>
1573 </div><!-- editButtons -->
1574 </div><!-- editOptions -->");
1575
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                 $token = htmlspecialchars( $wgUser->editToken() );
1589                 $wgOut->addHTML( "\n<input type='hidden' value=\"$token\" name=\"wpEditToken\" />\n" );
1590
1591                 $this->showTosSummary();
1592                 $this->showEditTools();
1593
1594                 $wgOut->addHTML( <<<END
1595 {$this->editFormTextAfterTools}
1596 <div class='templatesUsed'>
1597 {$formattedtemplates}
1598 </div>
1599 <div class='hiddencats'>
1600 {$formattedhiddencats}
1601 </div>
1602 END
1603 );
1604
1605                 if ( $this->isConflict && wfRunHooks( 'EditPageBeforeConflictDiff', array( &$this, &$wgOut ) ) ) {
1606                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourdiff" );
1607
1608                         $de = new DifferenceEngine( $this->mTitle );
1609                         $de->setText( $this->textbox2, $this->textbox1 );
1610                         $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
1611
1612                         $wgOut->wrapWikiMsg( '<h2>$1</h2>', "yourtext" );
1613                         $this->showTextbox2();
1614                 }
1615                 $wgOut->addHTML( $this->editFormTextBottom );
1616                 $wgOut->addHTML( "</form>\n" );
1617                 if ( !$wgUser->getOption( 'previewontop' ) ) {
1618                         $this->displayPreviewArea( $previewOutput, false );
1619                 }
1620
1621                 wfProfileOut( __METHOD__ );
1622         }
1623
1624         protected function showFormBeforeText() {
1625                 global $wgOut;
1626                 $wgOut->addHTML( "
1627 <input type='hidden' value=\"" . htmlspecialchars( $this->section ) . "\" name=\"wpSection\" />
1628 <input type='hidden' value=\"{$this->starttime}\" name=\"wpStarttime\" />\n
1629 <input type='hidden' value=\"{$this->edittime}\" name=\"wpEdittime\" />\n
1630 <input type='hidden' value=\"{$this->scrolltop}\" name=\"wpScrolltop\" id=\"wpScrolltop\" />\n" );
1631         }
1632
1633         protected function showTextbox1( $classes ) {
1634                 $attribs = array( 'tabindex' => 1 );
1635
1636                 if ( $this->wasDeletedSinceLastEdit() )
1637                         $attribs['type'] = 'hidden';
1638                 if ( !empty( $classes ) )
1639                         $attribs['class'] = implode( ' ', $classes );
1640
1641                 $this->showTextbox( $this->textbox1, 'wpTextbox1', $attribs );
1642         }
1643
1644         protected function showTextbox2() {
1645                 $this->showTextbox( $this->textbox2, 'wpTextbox2', array( 'tabindex' => 6 ) );
1646         }
1647
1648         protected function showTextbox( $content, $name, $attribs = array() ) {
1649                 global $wgOut, $wgUser;
1650
1651                 $wikitext = $this->safeUnicodeOutput( $content );
1652                 if ( $wikitext !== '' ) {
1653                         // Ensure there's a newline at the end, otherwise adding lines
1654                         // is awkward.
1655                         // But don't add a newline if the ext is empty, or Firefox in XHTML
1656                         // mode will show an extra newline. A bit annoying.
1657                         $wikitext .= "\n";
1658                 }
1659
1660                 $attribs['accesskey'] = ',';
1661                 $attribs['id'] = $name;
1662
1663                 if ( $wgUser->getOption( 'editwidth' ) )
1664                         $attribs['style'] = 'width: 100%';
1665
1666                 $wgOut->addHTML( Xml::textarea(
1667                         $name,
1668                         $wikitext,
1669                         $wgUser->getIntOption( 'cols' ), $wgUser->getIntOption( 'rows' ),
1670                         $attribs ) );
1671         }
1672
1673         protected function displayPreviewArea( $previewOutput, $isOnTop = false ) {
1674                 global $wgOut;
1675                 $classes = array();
1676                 if ( $isOnTop )
1677                         $classes[] = 'ontop';
1678
1679                 $attribs = array( 'id' => 'wikiPreview', 'class' => implode( ' ', $classes ) );
1680
1681                 if ( $this->formtype != 'preview' )
1682                         $attribs['style'] = 'display: none;';
1683
1684                 $wgOut->addHTML( Xml::openElement( 'div', $attribs ) );
1685
1686                 if ( $this->formtype == 'preview' ) {
1687                         $this->showPreview( $previewOutput );
1688                 }
1689
1690                 $wgOut->addHTML( '</div>' );
1691
1692                 if ( $this->formtype == 'diff') {
1693                         $this->showDiff();
1694                 }
1695         }
1696
1697         /**
1698          * Append preview output to $wgOut.
1699          * Includes category rendering if this is a category page.
1700          *
1701          * @param string $text The HTML to be output for the preview.
1702          */
1703         protected function showPreview( $text ) {
1704                 global $wgOut;
1705                 if ( $this->mTitle->getNamespace() == NS_CATEGORY) {
1706                         $this->mArticle->openShowCategory();
1707                 }
1708                 # This hook seems slightly odd here, but makes things more
1709                 # consistent for extensions.
1710                 wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
1711                 $wgOut->addHTML( $text );
1712                 if ( $this->mTitle->getNamespace() == NS_CATEGORY ) {
1713                         $this->mArticle->closeShowCategory();
1714                 }
1715         }
1716
1717         /**
1718          * Live Preview lets us fetch rendered preview page content and
1719          * add it to the page without refreshing the whole page.
1720          * If not supported by the browser it will fall through to the normal form
1721          * submission method.
1722          *
1723          * This function outputs a script tag to support live preview, and
1724          * returns an onclick handler which should be added to the attributes
1725          * of the preview button
1726          */
1727         function doLivePreviewScript() {
1728                 global $wgOut, $wgTitle;
1729                 $wgOut->addScriptFile( 'preview.js' );
1730                 return "";
1731         }
1732
1733         protected function showTosSummary() {
1734                 $msg = 'editpage-tos-summary';
1735                 // Give a chance for site and per-namespace customizations of
1736                 // terms of service summary link that might exist separately
1737                 // from the copyright notice.
1738                 //
1739                 // This will display between the save button and the edit tools,
1740                 // so should remain short!
1741                 wfRunHooks( 'EditPageTosSummary', array( $this->mTitle, &$msg ) );
1742                 $text = wfMsg( $msg );
1743                 if( !wfEmptyMsg( $msg, $text ) && $text !== '-' ) {
1744                         global $wgOut;
1745                         $wgOut->addHTML( '<div class="mw-tos-summary">' );
1746                         $wgOut->addWikiMsgArray( $msg, array() );
1747                         $wgOut->addHTML( '</div>' );
1748                 }
1749         }
1750
1751         protected function showEditTools() {
1752                 global $wgOut;
1753                 $wgOut->addHTML( '<div class="mw-editTools">' );
1754                 $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) );
1755                 $wgOut->addHTML( '</div>' );
1756         }
1757
1758         protected function getLastDelete() {
1759                 $dbr = wfGetDB( DB_SLAVE );
1760                 $data = $dbr->selectRow(
1761                         array( 'logging', 'user' ),
1762                         array( 'log_type',
1763                                'log_action',
1764                                'log_timestamp',
1765                                'log_user',
1766                                'log_namespace',
1767                                'log_title',
1768                                'log_comment',
1769                                'log_params',
1770                                'log_deleted',
1771                                'user_name' ),
1772                         array( 'log_namespace' => $this->mTitle->getNamespace(),
1773                                'log_title' => $this->mTitle->getDBkey(),
1774                                'log_type' => 'delete',
1775                                'log_action' => 'delete',
1776                                'user_id=log_user' ),
1777                         __METHOD__,
1778                         array( 'LIMIT' => 1, 'ORDER BY' => 'log_timestamp DESC' )
1779                 );
1780                 // Quick paranoid permission checks...
1781                 if( is_object( $data ) ) {
1782                         if( $data->log_deleted & LogPage::DELETED_USER )
1783                                 $data->user_name = wfMsgHtml( 'rev-deleted-user' );
1784                         if( $data->log_deleted & LogPage::DELETED_COMMENT )
1785                                 $data->log_comment = wfMsgHtml( 'rev-deleted-comment' );
1786                 }
1787                 return $data;
1788         }
1789
1790         /**
1791          * Get the rendered text for previewing.
1792          * @return string
1793          */
1794         function getPreviewText() {
1795                 global $wgOut, $wgUser, $wgTitle, $wgParser, $wgLang, $wgContLang, $wgMessageCache;
1796
1797                 wfProfileIn( __METHOD__ );
1798
1799                 if ( $this->mTriedSave && !$this->mTokenOk ) {
1800                         if ( $this->mTokenOkExceptSuffix ) {
1801                                 $note = wfMsg( 'token_suffix_mismatch' );
1802                         } else {
1803                                 $note = wfMsg( 'session_fail_preview' );
1804                         }
1805                 } else {
1806                         $note = wfMsg( 'previewnote' );
1807                 }
1808
1809                 $parserOptions = ParserOptions::newFromUser( $wgUser );
1810                 $parserOptions->setEditSection( false );
1811                 $parserOptions->setIsPreview( true );
1812                 $parserOptions->setIsSectionPreview( !is_null($this->section) && $this->section !== '' );
1813
1814                 global $wgRawHtml;
1815                 if ( $wgRawHtml && !$this->mTokenOk ) {
1816                         // Could be an offsite preview attempt. This is very unsafe if
1817                         // HTML is enabled, as it could be an attack.
1818                         return $wgOut->parse( "<div class='previewnote'>" .
1819                                 wfMsg( 'session_fail_preview_html' ) . "</div>" );
1820                 }
1821
1822                 # don't parse user css/js, show message about preview
1823                 # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
1824
1825                 if ( $this->isCssJsSubpage ) {
1826                         if (preg_match( "/\\.css$/", $this->mTitle->getText() ) ) {
1827                                 $previewtext = wfMsg( 'usercsspreview' );
1828                         } else if (preg_match( "/\\.js$/", $this->mTitle->getText() ) ) {
1829                                 $previewtext = wfMsg( 'userjspreview' );
1830                         }
1831                         $parserOptions->setTidy( true );
1832                         $parserOutput = $wgParser->parse( $previewtext, $this->mTitle, $parserOptions );
1833                         $previewHTML = $parserOutput->mText;
1834                 } elseif ( $rt = Title::newFromRedirectArray( $this->textbox1 ) ) {
1835                         $previewHTML = $this->mArticle->viewRedirect( $rt, false );
1836                 } else {
1837                         $toparse = $this->textbox1;
1838
1839                         # If we're adding a comment, we need to show the
1840                         # summary as the headline
1841                         if ( $this->section == "new" && $this->summary != "" ) {
1842                                 $toparse="== {$this->summary} ==\n\n" . $toparse;
1843                         }
1844
1845                         if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData;
1846
1847                         // Parse mediawiki messages with correct target language
1848                         if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
1849                                 list( /* $unused */, $lang ) = $wgMessageCache->figureMessage( $this->mTitle->getText() );
1850                                 $obj = wfGetLangObj( $lang );
1851                                 $parserOptions->setTargetLanguage( $obj );
1852                         }
1853
1854
1855                         $parserOptions->setTidy( true );
1856                         $parserOptions->enableLimitReport();
1857                         $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ),
1858                                         $this->mTitle, $parserOptions );
1859
1860                         $previewHTML = $parserOutput->getText();
1861                         $this->mParserOutput = $parserOutput;
1862                         $wgOut->addParserOutputNoText( $parserOutput );
1863
1864                         if ( count( $parserOutput->getWarnings() ) ) {
1865                                 $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
1866                         }
1867                 }
1868
1869                 if( $this->isConflict ) {
1870                         $conflict = '<h2 id="mw-previewconflict">' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
1871                 } else {
1872                         $conflict = '<hr />';
1873                 }
1874
1875                 $previewhead = "<div class='previewnote'>\n" .
1876                         '<h2 id="mw-previewheader">' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>" .
1877                         $wgOut->parse( $note ) . $conflict . "</div>\n";
1878
1879                 wfProfileOut( __METHOD__ );
1880                 return $previewhead . $previewHTML . $this->previewTextAfterContent;
1881         }
1882
1883         function getTemplates() {
1884                 if ( $this->preview || $this->section != '' ) {
1885                         $templates = array();
1886                         if ( !isset( $this->mParserOutput ) ) return $templates;
1887                         foreach( $this->mParserOutput->getTemplates() as $ns => $template) {
1888                                 foreach( array_keys( $template ) as $dbk ) {
1889                                         $templates[] = Title::makeTitle($ns, $dbk);
1890                                 }
1891                         }
1892                         return $templates;
1893                 } else {
1894                         return $this->mArticle->getUsedTemplates();
1895                 }
1896         }
1897
1898         /**
1899          * Call the stock "user is blocked" page
1900          */
1901         function blockedPage() {
1902                 global $wgOut, $wgUser;
1903                 $wgOut->blockedPage( false ); # Standard block notice on the top, don't 'return'
1904
1905                 # If the user made changes, preserve them when showing the markup
1906                 # (This happens when a user is blocked during edit, for instance)
1907                 $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
1908                 if ( $first ) {
1909                         $source = $this->mTitle->exists() ? $this->getContent() : false;
1910                 } else {
1911                         $source = $this->textbox1;
1912                 }
1913
1914                 # Spit out the source or the user's modified version
1915                 if ( $source !== false ) {
1916                         $rows = $wgUser->getIntOption( 'rows' );
1917                         $cols = $wgUser->getIntOption( 'cols' );
1918                         $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
1919                         $wgOut->addHTML( '<hr />' );
1920                         $wgOut->addWikiMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() );
1921                         # Why we don't use Xml::element here?
1922                         # Is it because if $source is '', it returns <textarea />?
1923                         $wgOut->addHTML( Xml::openElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . Xml::closeElement( 'textarea' ) );
1924                 }
1925         }
1926
1927         /**
1928          * Produce the stock "please login to edit pages" page
1929          */
1930         function userNotLoggedInPage() {
1931                 global $wgUser, $wgOut, $wgTitle;
1932                 $skin = $wgUser->getSkin();
1933
1934                 $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
1935                 $loginLink = $skin->link(
1936                         $loginTitle,
1937                         wfMsgHtml( 'loginreqlink' ),
1938                         array(),
1939                         array( 'returnto' => $wgTitle->getPrefixedText() ),
1940                         array( 'known', 'noclasses' )
1941                 );
1942
1943                 $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
1944                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1945                 $wgOut->setArticleRelated( false );
1946
1947                 $wgOut->addHTML( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
1948                 $wgOut->returnToMain( false, $wgTitle );
1949         }
1950
1951         /**
1952          * Creates a basic error page which informs the user that
1953          * they have attempted to edit a nonexistent section.
1954          */
1955         function noSuchSectionPage() {
1956                 global $wgOut, $wgTitle;
1957
1958                 $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
1959                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1960                 $wgOut->setArticleRelated( false );
1961
1962                 $wgOut->addWikiMsg( 'nosuchsectiontext', $this->section );
1963                 $wgOut->returnToMain( false, $wgTitle );
1964         }
1965
1966         /**
1967          * Produce the stock "your edit contains spam" page
1968          *
1969          * @param $match Text which triggered one or more filters
1970          */
1971         function spamPage( $match = false ) {
1972                 global $wgOut, $wgTitle;
1973
1974                 $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
1975                 $wgOut->setRobotPolicy( 'noindex,nofollow' );
1976                 $wgOut->setArticleRelated( false );
1977
1978                 $wgOut->addHTML( '<div id="spamprotected">' );
1979                 $wgOut->addWikiMsg( 'spamprotectiontext' );
1980                 if ( $match )
1981                         $wgOut->addWikiMsg( 'spamprotectionmatch', wfEscapeWikiText( $match ) );
1982                 $wgOut->addHTML( '</div>' );
1983
1984                 $wgOut->returnToMain( false, $wgTitle );
1985         }
1986
1987         /**
1988          * @private
1989          * @todo document
1990          */
1991         function mergeChangesInto( &$editText ){
1992                 wfProfileIn( __METHOD__ );
1993
1994                 $db = wfGetDB( DB_MASTER );
1995
1996                 // This is the revision the editor started from
1997                 $baseRevision = $this->getBaseRevision();
1998                 if ( is_null( $baseRevision ) ) {
1999                         wfProfileOut( __METHOD__ );
2000                         return false;
2001                 }
2002                 $baseText = $baseRevision->getText();
2003
2004                 // The current state, we want to merge updates into it
2005                 $currentRevision = Revision::loadFromTitle( $db, $this->mTitle );
2006                 if ( is_null( $currentRevision ) ) {
2007                         wfProfileOut( __METHOD__ );
2008                         return false;
2009                 }
2010                 $currentText = $currentRevision->getText();
2011
2012                 $result = '';
2013                 if ( wfMerge( $baseText, $editText, $currentText, $result ) ) {
2014                         $editText = $result;
2015                         wfProfileOut( __METHOD__ );
2016                         return true;
2017                 } else {
2018                         wfProfileOut( __METHOD__ );
2019                         return false;
2020                 }
2021         }
2022
2023         /**
2024          * Check if the browser is on a blacklist of user-agents known to
2025          * mangle UTF-8 data on form submission. Returns true if Unicode
2026          * should make it through, false if it's known to be a problem.
2027          * @return bool
2028          * @private
2029          */
2030         function checkUnicodeCompliantBrowser() {
2031                 global $wgBrowserBlackList;
2032                 if ( empty( $_SERVER["HTTP_USER_AGENT"] ) ) {
2033                         // No User-Agent header sent? Trust it by default...
2034                         return true;
2035                 }
2036                 $currentbrowser = $_SERVER["HTTP_USER_AGENT"];
2037                 foreach ( $wgBrowserBlackList as $browser ) {
2038                         if ( preg_match($browser, $currentbrowser) ) {
2039                                 return false;
2040                         }
2041                 }
2042                 return true;
2043         }
2044
2045         /**
2046          * @deprecated use $wgParser->stripSectionName()
2047          */
2048         function pseudoParseSectionAnchor( $text ) {
2049                 global $wgParser;
2050                 return $wgParser->stripSectionName( $text );
2051         }
2052
2053         /**
2054          * Format an anchor fragment as it would appear for a given section name
2055          * @param string $text
2056          * @return string
2057          * @private
2058          */
2059         function sectionAnchor( $text ) {
2060                 global $wgParser;
2061                 return $wgParser->guessSectionNameFromWikiText( $text );
2062         }
2063
2064         /**
2065          * Shows a bulletin board style toolbar for common editing functions.
2066          * It can be disabled in the user preferences.
2067          * The necessary JavaScript code can be found in skins/common/edit.js.
2068          *
2069          * @return string
2070          */
2071         static function getEditToolbar() {
2072                 global $wgStylePath, $wgContLang, $wgLang;
2073
2074                 /**
2075                  * toolarray an array of arrays which each include the filename of
2076                  * the button image (without path), the opening tag, the closing tag,
2077                  * and optionally a sample text that is inserted between the two when no
2078                  * selection is highlighted.
2079                  * The tip text is shown when the user moves the mouse over the button.
2080                  *
2081                  * Already here are accesskeys (key), which are not used yet until someone
2082                  * can figure out a way to make them work in IE. However, we should make
2083                  * sure these keys are not defined on the edit page.
2084                  */
2085                 $toolarray = array(
2086                         array(
2087                                 'image'  => $wgLang->getImageFile( 'button-bold' ),
2088                                 'id'     => 'mw-editbutton-bold',
2089                                 'open'   => '\'\'\'',
2090                                 'close'  => '\'\'\'',
2091                                 'sample' => wfMsg( 'bold_sample' ),
2092                                 'tip'    => wfMsg( 'bold_tip' ),
2093                                 'key'    => 'B'
2094                         ),
2095                         array(
2096                                 'image'  => $wgLang->getImageFile( 'button-italic' ),
2097                                 'id'     => 'mw-editbutton-italic',
2098                                 'open'   => '\'\'',
2099                                 'close'  => '\'\'',
2100                                 'sample' => wfMsg( 'italic_sample' ),
2101                                 'tip'    => wfMsg( 'italic_tip' ),
2102                                 'key'    => 'I'
2103                         ),
2104                         array(
2105                                 'image'  => $wgLang->getImageFile( 'button-link' ),
2106                                 'id'     => 'mw-editbutton-link',
2107                                 'open'   => '[[',
2108                                 'close'  => ']]',
2109                                 'sample' => wfMsg( 'link_sample' ),
2110                                 'tip'    => wfMsg( 'link_tip' ),
2111                                 'key'    => 'L'
2112                         ),
2113                         array(
2114                                 'image'  => $wgLang->getImageFile( 'button-extlink' ),
2115                                 'id'     => 'mw-editbutton-extlink',
2116                                 'open'   => '[',
2117                                 'close'  => ']',
2118                                 'sample' => wfMsg( 'extlink_sample' ),
2119                                 'tip'    => wfMsg( 'extlink_tip' ),
2120                                 'key'    => 'X'
2121                         ),
2122                         array(
2123                                 'image'  => $wgLang->getImageFile( 'button-headline' ),
2124                                 'id'     => 'mw-editbutton-headline',
2125                                 'open'   => "\n== ",
2126                                 'close'  => " ==\n",
2127                                 'sample' => wfMsg( 'headline_sample' ),
2128                                 'tip'    => wfMsg( 'headline_tip' ),
2129                                 'key'    => 'H'
2130                         ),
2131                         array(
2132                                 'image'  => $wgLang->getImageFile( 'button-image' ),
2133                                 'id'     => 'mw-editbutton-image',
2134                                 'open'   => '[[' . $wgContLang->getNsText( NS_FILE ) . ':',
2135                                 'close'  => ']]',
2136                                 'sample' => wfMsg( 'image_sample' ),
2137                                 'tip'    => wfMsg( 'image_tip' ),
2138                                 'key'    => 'D'
2139                         ),
2140                         array(
2141                                 'image'  => $wgLang->getImageFile( 'button-media' ),
2142                                 'id'     => 'mw-editbutton-media',
2143                                 'open'   => '[[' . $wgContLang->getNsText( NS_MEDIA ) . ':',
2144                                 'close'  => ']]',
2145                                 'sample' => wfMsg( 'media_sample' ),
2146                                 'tip'    => wfMsg( 'media_tip' ),
2147                                 'key'    => 'M'
2148                         ),
2149                         array(
2150                                 'image'  => $wgLang->getImageFile( 'button-math' ),
2151                                 'id'     => 'mw-editbutton-math',
2152                                 'open'   => "<math>",
2153                                 'close'  => "</math>",
2154                                 'sample' => wfMsg( 'math_sample' ),
2155                                 'tip'    => wfMsg( 'math_tip' ),
2156                                 'key'    => 'C'
2157                         ),
2158                         array(
2159                                 'image'  => $wgLang->getImageFile( 'button-nowiki' ),
2160                                 'id'     => 'mw-editbutton-nowiki',
2161                                 'open'   => "<nowiki>",
2162                                 'close'  => "</nowiki>",
2163                                 'sample' => wfMsg( 'nowiki_sample' ),
2164                                 'tip'    => wfMsg( 'nowiki_tip' ),
2165                                 'key'    => 'N'
2166                         ),
2167                         array(
2168                                 'image'  => $wgLang->getImageFile( 'button-sig' ),
2169                                 'id'     => 'mw-editbutton-signature',
2170                                 'open'   => '--~~~~',
2171                                 'close'  => '',
2172                                 'sample' => '',
2173                                 'tip'    => wfMsg( 'sig_tip' ),
2174                                 'key'    => 'Y'
2175                         ),
2176                         array(
2177                                 'image'  => $wgLang->getImageFile( 'button-hr' ),
2178                                 'id'     => 'mw-editbutton-hr',
2179                                 'open'   => "\n----\n",
2180                                 'close'  => '',
2181                                 'sample' => '',
2182                                 'tip'    => wfMsg( 'hr_tip' ),
2183                                 'key'    => 'R'
2184                         )
2185                 );
2186                 $toolbar = "<div id='toolbar'>\n";
2187
2188                 $script = '';
2189                 foreach ( $toolarray as $tool ) {
2190                         $params = array(
2191                                 $image = $wgStylePath . '/common/images/' . $tool['image'],
2192                                 // Note that we use the tip both for the ALT tag and the TITLE tag of the image.
2193                                 // Older browsers show a "speedtip" type message only for ALT.
2194                                 // Ideally these should be different, realistically they
2195                                 // probably don't need to be.
2196                                 $tip = $tool['tip'],
2197                                 $open = $tool['open'],
2198                                 $close = $tool['close'],
2199                                 $sample = $tool['sample'],
2200                                 $cssId = $tool['id'],
2201                         );
2202
2203                         $paramList = implode( ',',
2204                                 array_map( array( 'Xml', 'encodeJsVar' ), $params ) );
2205                         $script .= "addButton($paramList);\n";
2206                 }
2207                 $toolbar .= Html::inlineScript( "\n$script\n" );
2208
2209                 $toolbar .= "\n</div>";
2210
2211                 wfRunHooks( 'EditPageBeforeEditToolbar', array( &$toolbar ) );
2212
2213                 return $toolbar;
2214         }
2215
2216         /**
2217          * Returns an array of html code of the following checkboxes:
2218          * minor and watch
2219          *
2220          * @param $tabindex Current tabindex
2221          * @param $skin Skin object
2222          * @param $checked Array of checkbox => bool, where bool indicates the checked
2223          *                 status of the checkbox
2224          *
2225          * @return array
2226          */
2227         public function getCheckboxes( &$tabindex, $skin, $checked ) {
2228                 global $wgUser;
2229
2230                 $checkboxes = array();
2231
2232                 $checkboxes['minor'] = '';
2233                 $minorLabel = wfMsgExt( 'minoredit', array( 'parseinline' ) );
2234                 if ( $wgUser->isAllowed( 'minoredit' ) ) {
2235                         $attribs = array(
2236                                 'tabindex'  => ++$tabindex,
2237                                 'accesskey' => wfMsg( 'accesskey-minoredit' ),
2238                                 'id'        => 'wpMinoredit',
2239                         );
2240                         $checkboxes['minor'] =
2241                                 Xml::check( 'wpMinoredit', $checked['minor'], $attribs ) .
2242                                 "&nbsp;<label for='wpMinoredit'" . $skin->tooltip( 'minoredit', 'withaccess' ) . ">{$minorLabel}</label>";
2243                 }
2244
2245                 $watchLabel = wfMsgExt( 'watchthis', array( 'parseinline' ) );
2246                 $checkboxes['watch'] = '';
2247                 if ( $wgUser->isLoggedIn() ) {
2248                         $attribs = array(
2249                                 'tabindex'  => ++$tabindex,
2250                                 'accesskey' => wfMsg( 'accesskey-watch' ),
2251                                 'id'        => 'wpWatchthis',
2252                         );
2253                         $checkboxes['watch'] =
2254                                 Xml::check( 'wpWatchthis', $checked['watch'], $attribs ) .
2255                                 "&nbsp;<label for='wpWatchthis'" . $skin->tooltip( 'watch', 'withaccess' ) . ">{$watchLabel}</label>";
2256                 }
2257                 wfRunHooks( 'EditPageBeforeEditChecks', array( &$this, &$checkboxes, &$tabindex ) );
2258                 return $checkboxes;
2259         }
2260
2261         /**
2262          * Returns an array of html code of the following buttons:
2263          * save, diff, preview and live
2264          *
2265          * @param $tabindex Current tabindex
2266          *
2267          * @return array
2268          */
2269         public function getEditButtons(&$tabindex) {
2270                 $buttons = array();
2271
2272                 $temp = array(
2273                         'id'        => 'wpSave',
2274                         'name'      => 'wpSave',
2275                         'type'      => 'submit',
2276                         'tabindex'  => ++$tabindex,
2277                         'value'     => wfMsg( 'savearticle' ),
2278                         'accesskey' => wfMsg( 'accesskey-save' ),
2279                         'title'     => wfMsg( 'tooltip-save' ).' ['.wfMsg( 'accesskey-save' ).']',
2280                 );
2281                 $buttons['save'] = Xml::element('input', $temp, '');
2282
2283                 ++$tabindex; // use the same for preview and live preview
2284                 if ( $this->useLivePreview() ) {
2285                         $this->doLivePreviewScript(); // Add to output
2286
2287                         $temp = array(
2288                                 'id'        => 'wpPreview',
2289                                 'name'      => 'wpPreview',
2290                                 'type'      => 'submit',
2291                                 'tabindex'  => $tabindex,
2292                                 'value'     => wfMsg( 'showpreview' ),
2293                                 'accesskey' => '',
2294                                 'title'     => wfMsg( 'tooltip-preview' ).' ['.wfMsg( 'accesskey-preview' ).']',
2295                         );
2296                         $buttons['preview'] = Xml::element('input', $temp, '');
2297
2298                         $temp = array(
2299                                 'id'        => 'wpLivePreview',
2300                                 'name'      => 'wpLivePreview',
2301                                 'type'      => 'submit',
2302                                 'tabindex'  => $tabindex,
2303                                 'value'     => wfMsg( 'showlivepreview' ),
2304                                 'accesskey' => wfMsg( 'accesskey-preview' ),
2305                                 'title'     => '',
2306                                 'style'     => 'display: none;',
2307                         );
2308
2309                         $buttons['live'] = Xml::element( 'input', $temp, '' );
2310                 } else {
2311                         $temp = array(
2312                                 'id'        => 'wpPreview',
2313                                 'name'      => 'wpPreview',
2314                                 'type'      => 'submit',
2315                                 'tabindex'  => $tabindex,
2316                                 'value'     => wfMsg( 'showpreview' ),
2317                                 'accesskey' => wfMsg( 'accesskey-preview' ),
2318                                 'title'     => wfMsg( 'tooltip-preview' ) . ' [' . wfMsg( 'accesskey-preview' ) . ']',
2319                         );
2320                         $buttons['preview'] = Xml::element( 'input', $temp, '' );
2321                         $buttons['live'] = '';
2322                 }
2323
2324                 $temp = array(
2325                         'id'        => 'wpDiff',
2326                         'name'      => 'wpDiff',
2327                         'type'      => 'submit',
2328                         'tabindex'  => ++$tabindex,
2329                         'value'     => wfMsg( 'showdiff' ),
2330                         'accesskey' => wfMsg( 'accesskey-diff' ),
2331                         'title'     => wfMsg( 'tooltip-diff' ) . ' [' . wfMsg( 'accesskey-diff' ) . ']',
2332                 );
2333                 $buttons['diff'] = Xml::element( 'input', $temp, '' );
2334
2335                 wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons, &$tabindex ) );
2336                 return $buttons;
2337         }
2338
2339         /**
2340          * Whether to use live preview for this page
2341          * This disables live preview when editing css/js user subpages so that the
2342          * user can preview them (bug 3421)
2343          *
2344          * @return Boolean
2345          */
2346         public function useLivePreview() {
2347                 global $wgLivePreview, $wgUser;
2348
2349                 return $wgLivePreview && $wgUser->getOption( 'uselivepreview' ) &&
2350                         !( ( $this->mTitle->isCssSubpage() && $this->mTitle->userCanEditCssSubpage() ) ||
2351                         ( $this->mTitle->isJsSubpage() && $this->mTitle->userCanEditCssSubpage() ) );
2352         }
2353
2354         /**
2355          * Output preview text only. This can be sucked into the edit page
2356          * via JavaScript, and saves the server time rendering the skin as
2357          * well as theoretically being more robust on the client (doesn't
2358          * disturb the edit box's undo history, won't eat your text on
2359          * failure, etc).
2360          *
2361          * @todo This doesn't include category or interlanguage links.
2362          *       Would need to enhance it a bit, <s>maybe wrap them in XML
2363          *       or something...</s> that might also require more skin
2364          *       initialization, so check whether that's a problem.
2365          */
2366         function livePreview() {
2367                 global $wgOut;
2368                 $wgOut->disable();
2369                 header( 'Content-type: text/xml; charset=utf-8' );
2370                 header( 'Cache-control: no-cache' );
2371
2372                 $previewText = $this->getPreviewText();
2373                 #$categories = $skin->getCategoryLinks();
2374
2375                 $s =
2376                 '<?xml version="1.0" encoding="UTF-8" ?>' . "\n" .
2377                 Xml::tags( 'livepreview', null,
2378                         Xml::element( 'preview', null, $previewText )
2379                         #.      Xml::element( 'category', null, $categories )
2380                 );
2381                 echo $s;
2382         }
2383
2384
2385         /**
2386          * Get a diff between the current contents of the edit box and the
2387          * version of the page we're editing from.
2388          *
2389          * If this is a section edit, we'll replace the section as for final
2390          * save and then make a comparison.
2391          */
2392         function showDiff() {
2393                 $oldtext = $this->mArticle->fetchContent();
2394                 $newtext = $this->mArticle->replaceSection(
2395                         $this->section, $this->textbox1, $this->summary, $this->edittime );
2396                 $newtext = $this->mArticle->preSaveTransform( $newtext );
2397                 $oldtitle = wfMsgExt( 'currentrev', array( 'parseinline' ) );
2398                 $newtitle = wfMsgExt( 'yourtext', array( 'parseinline' ) );
2399                 if ( $oldtext !== false  || $newtext != '' ) {
2400                         $de = new DifferenceEngine( $this->mTitle );
2401                         $de->setText( $oldtext, $newtext );
2402                         $difftext = $de->getDiff( $oldtitle, $newtitle );
2403                         $de->showDiffStyle();
2404                 } else {
2405                         $difftext = '';
2406                 }
2407
2408                 global $wgOut;
2409                 $wgOut->addHTML( '<div id="wikiDiff">' . $difftext . '</div>' );
2410         }
2411
2412         /**
2413          * Filter an input field through a Unicode de-armoring process if it
2414          * came from an old browser with known broken Unicode editing issues.
2415          *
2416          * @param WebRequest $request
2417          * @param string $field
2418          * @return string
2419          * @private
2420          */
2421         function safeUnicodeInput( $request, $field ) {
2422                 $text = rtrim( $request->getText( $field ) );
2423                 return $request->getBool( 'safemode' )
2424                         ? $this->unmakesafe( $text )
2425                         : $text;
2426         }
2427
2428         /**
2429          * Filter an output field through a Unicode armoring process if it is
2430          * going to an old browser with known broken Unicode editing issues.
2431          *
2432          * @param string $text
2433          * @return string
2434          * @private
2435          */
2436         function safeUnicodeOutput( $text ) {
2437                 global $wgContLang;
2438                 $codedText = $wgContLang->recodeForEdit( $text );
2439                 return $this->checkUnicodeCompliantBrowser()
2440                         ? $codedText
2441                         : $this->makesafe( $codedText );
2442         }
2443
2444         /**
2445          * A number of web browsers are known to corrupt non-ASCII characters
2446          * in a UTF-8 text editing environment. To protect against this,
2447          * detected browsers will be served an armored version of the text,
2448          * with non-ASCII chars converted to numeric HTML character references.
2449          *
2450          * Preexisting such character references will have a 0 added to them
2451          * to ensure that round-trips do not alter the original data.
2452          *
2453          * @param string $invalue
2454          * @return string
2455          * @private
2456          */
2457         function makesafe( $invalue ) {
2458                 // Armor existing references for reversability.
2459                 $invalue = strtr( $invalue, array( "&#x" => "&#x0" ) );
2460
2461                 $bytesleft = 0;
2462                 $result = "";
2463                 $working = 0;
2464                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2465                         $bytevalue = ord( $invalue{$i} );
2466                         if ( $bytevalue <= 0x7F ) { //0xxx xxxx
2467                                 $result .= chr( $bytevalue );
2468                                 $bytesleft = 0;
2469                         } elseif ( $bytevalue <= 0xBF ) { //10xx xxxx
2470                                 $working = $working << 6;
2471                                 $working += ($bytevalue & 0x3F);
2472                                 $bytesleft--;
2473                                 if ( $bytesleft <= 0 ) {
2474                                         $result .= "&#x" . strtoupper( dechex( $working ) ) . ";";
2475                                 }
2476                         } elseif ( $bytevalue <= 0xDF ) { //110x xxxx
2477                                 $working = $bytevalue & 0x1F;
2478                                 $bytesleft = 1;
2479                         } elseif ( $bytevalue <= 0xEF ) { //1110 xxxx
2480                                 $working = $bytevalue & 0x0F;
2481                                 $bytesleft = 2;
2482                         } else { //1111 0xxx
2483                                 $working = $bytevalue & 0x07;
2484                                 $bytesleft = 3;
2485                         }
2486                 }
2487                 return $result;
2488         }
2489
2490         /**
2491          * Reverse the previously applied transliteration of non-ASCII characters
2492          * back to UTF-8. Used to protect data from corruption by broken web browsers
2493          * as listed in $wgBrowserBlackList.
2494          *
2495          * @param string $invalue
2496          * @return string
2497          * @private
2498          */
2499         function unmakesafe( $invalue ) {
2500                 $result = "";
2501                 for( $i = 0; $i < strlen( $invalue ); $i++ ) {
2502                         if ( ( substr( $invalue, $i, 3 ) == "&#x" ) && ( $invalue{$i+3} != '0' ) ) {
2503                                 $i += 3;
2504                                 $hexstring = "";
2505                                 do {
2506                                         $hexstring .= $invalue{$i};
2507                                         $i++;
2508                                 } while( ctype_xdigit( $invalue{$i} ) && ( $i < strlen( $invalue ) ) );
2509
2510                                 // Do some sanity checks. These aren't needed for reversability,
2511                                 // but should help keep the breakage down if the editor
2512                                 // breaks one of the entities whilst editing.
2513                                 if ( (substr($invalue,$i,1)==";") and (strlen($hexstring) <= 6) ) {
2514                                         $codepoint = hexdec($hexstring);
2515                                         $result .= codepointToUtf8( $codepoint );
2516                                 } else {
2517                                         $result .= "&#x" . $hexstring . substr( $invalue, $i, 1 );
2518                                 }
2519                         } else {
2520                                 $result .= substr( $invalue, $i, 1 );
2521                         }
2522                 }
2523                 // reverse the transform that we made for reversability reasons.
2524                 return strtr( $result, array( "&#x0" => "&#x" ) );
2525         }
2526
2527         function noCreatePermission() {
2528                 global $wgOut;
2529                 $wgOut->setPageTitle( wfMsg( 'nocreatetitle' ) );
2530                 $wgOut->addWikiMsg( 'nocreatetext' );
2531         }
2532
2533         /**
2534          * Attempt submission
2535          * @return bool false if output is done, true if the rest of the form should be displayed
2536          */
2537         function attemptSave() {
2538                 global $wgUser, $wgOut, $wgTitle, $wgRequest;
2539
2540                 $resultDetails = false;
2541                 # Allow bots to exempt some edits from bot flagging
2542                 $bot = $wgUser->isAllowed( 'bot' ) && $wgRequest->getBool( 'bot', true );
2543                 $value = $this->internalAttemptSave( $resultDetails, $bot );
2544
2545                 if ( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
2546                         $this->didSave = true;
2547                 }
2548
2549                 switch ( $value ) {
2550                         case self::AS_HOOK_ERROR_EXPECTED:
2551                         case self::AS_CONTENT_TOO_BIG:
2552                         case self::AS_ARTICLE_WAS_DELETED:
2553                         case self::AS_CONFLICT_DETECTED:
2554                         case self::AS_SUMMARY_NEEDED:
2555                         case self::AS_TEXTBOX_EMPTY:
2556                         case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
2557                         case self::AS_END:
2558                                 return true;
2559
2560                         case self::AS_HOOK_ERROR:
2561                         case self::AS_FILTERING:
2562                         case self::AS_SUCCESS_NEW_ARTICLE:
2563                         case self::AS_SUCCESS_UPDATE:
2564                                 return false;
2565
2566                         case self::AS_SPAM_ERROR:
2567                                 $this->spamPage( $resultDetails['spam'] );
2568                                 return false;
2569
2570                         case self::AS_BLOCKED_PAGE_FOR_USER:
2571                                 $this->blockedPage();
2572                                 return false;
2573
2574                         case self::AS_IMAGE_REDIRECT_ANON:
2575                                 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
2576                                 return false;
2577
2578                         case self::AS_READ_ONLY_PAGE_ANON:
2579                                 $this->userNotLoggedInPage();
2580                                 return false;
2581
2582                         case self::AS_READ_ONLY_PAGE_LOGGED:
2583                         case self::AS_READ_ONLY_PAGE:
2584                                 $wgOut->readOnlyPage();
2585                                 return false;
2586
2587                         case self::AS_RATE_LIMITED:
2588                                 $wgOut->rateLimited();
2589                                 return false;
2590
2591                         case self::AS_NO_CREATE_PERMISSION:
2592                                 $this->noCreatePermission();
2593                                 return;
2594
2595                         case self::AS_BLANK_ARTICLE:
2596                                 $wgOut->redirect( $wgTitle->getFullURL() );
2597                                 return false;
2598
2599                         case self::AS_IMAGE_REDIRECT_LOGGED:
2600                                 $wgOut->permissionRequired( 'upload' );
2601                                 return false;
2602                 }
2603         }
2604
2605         function getBaseRevision() {
2606                 if ( $this->mBaseRevision == false ) {
2607                         $db = wfGetDB( DB_MASTER );
2608                         $baseRevision = Revision::loadFromTimestamp(
2609                                 $db, $this->mTitle, $this->edittime );
2610                         return $this->mBaseRevision = $baseRevision;
2611                 } else {
2612                         return $this->mBaseRevision;
2613                 }
2614         }
2615 }