Fix for bug 13004, in which the Postgres full-text search has too many results,
[lhc/web/wiklou.git] / includes / EditPage.php
index e25cca8..0cdc21c 100644 (file)
@@ -9,39 +9,40 @@
  * but it should get easier to call those from alternate
  * interfaces.
  *
- * EditPage now holds references to two distinct Titles:
- * $uiTitle is the page that forms submit to, links point to,
- * redirects go to, etc. $dbTitle (as well as $mArticle) is the
+ * EditPage cares about two distinct titles:
+ * $wgTitle is the page that forms submit to, links point to,
+ * redirects go to, etc. $this->mTitle (as well as $mArticle) is the
  * page in the database that is actually being edited. These are
  * usually the same, but they are now allowed to be different.
  */
 class EditPage {
-       const AS_SUCCESS_UPDATE                         = 200;
+       const AS_SUCCESS_UPDATE                 = 200;
        const AS_SUCCESS_NEW_ARTICLE            = 201;
-       const AS_HOOK_ERROR                                     = 210;
-       const AS_FILTERING                                      = 211;
+       const AS_HOOK_ERROR                     = 210;
+       const AS_FILTERING                      = 211;
        const AS_HOOK_ERROR_EXPECTED            = 212;
        const AS_BLOCKED_PAGE_FOR_USER          = 215;
-       const AS_CONTENT_TOO_BIG                        = 216;
-       const AS_USER_CANNOT_EDIT                       = 217;
+       const AS_CONTENT_TOO_BIG                = 216;
+       const AS_USER_CANNOT_EDIT               = 217;
        const AS_READ_ONLY_PAGE_ANON            = 218;
        const AS_READ_ONLY_PAGE_LOGGED          = 219;
-       const AS_READ_ONLY_PAGE                         = 220;
-       const AS_RATE_LIMITED                           = 221;
+       const AS_READ_ONLY_PAGE                 = 220;
+       const AS_RATE_LIMITED                   = 221;
        const AS_ARTICLE_WAS_DELETED            = 222;
        const AS_NO_CREATE_PERMISSION           = 223;
-       const AS_BLANK_ARTICLE                          = 224;
-       const AS_CONFLICT_DETECTED                      = 225;
-       const AS_SUMMARY_NEEDED                         = 226;
-       const AS_TEXTBOX_EMPTY                          = 228;
-       const AS_MAX_ARTICLE_SIZE_EXCEDED       = 229;
-       const AS_OK                                                     = 230;
-       const AS_END                                            = 231;
-       const AS_SPAM_ERROR                                     = 232;
+       const AS_BLANK_ARTICLE                  = 224;
+       const AS_CONFLICT_DETECTED              = 225;
+       const AS_SUMMARY_NEEDED                 = 226;
+       const AS_TEXTBOX_EMPTY                  = 228;
+       const AS_MAX_ARTICLE_SIZE_EXCEEDED      = 229;
+       const AS_OK                             = 230;
+       const AS_END                            = 231;
+       const AS_SPAM_ERROR                     = 232;
+       const AS_IMAGE_REDIRECT_ANON            = 233;
+       const AS_IMAGE_REDIRECT_LOGGED          = 234;
 
        var $mArticle;
-       var $dbTitle;
-       var $uiTitle;
+       var $mTitle;
        var $mMetaData = '';
        var $isConflict = false;
        var $isCssJsSubpage = false;
@@ -88,9 +89,7 @@ class EditPage {
         */
        function EditPage( $article ) {
                $this->mArticle =& $article;
-               global $wgTitle;
-               $this->uiTitle =& $wgTitle;
-               $this->dbTitle = $article->getTitle();
+               $this->mTitle = $article->getTitle();
 
                # Placeholders for text injection by hooks (empty per default)
                $this->editFormPageTop =
@@ -103,8 +102,9 @@ class EditPage {
        
        /**
         * Fetch initial editing page content.
+        * @private
         */
-       private function getContent( $def_text = '' ) {
+       function getContent( $def_text = '' ) {
                global $wgOut, $wgRequest, $wgParser;
 
                # Get variables from query string :P
@@ -116,10 +116,10 @@ class EditPage {
                wfProfileIn( __METHOD__ );
 
                $text = '';
-               if( !$this->dbTitle->exists() ) {
-                       if ( $this->dbTitle->getNamespace() == NS_MEDIAWIKI ) {
+               if( !$this->mTitle->exists() ) {
+                       if ( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
                                # If this is a system message, get the default text. 
-                               $text = wfMsgWeirdKey ( $this->dbTitle->getText() ) ;
+                               $text = wfMsgWeirdKey ( $this->mTitle->getText() ) ;
                        } else {
                                # If requested, preload some text.
                                $text = $this->getPreloadedText( $preload );
@@ -335,14 +335,13 @@ class EditPage {
         * the newly-edited page.
         */
        function edit() {
-               global $wgOut, $wgUser, $wgRequest, $wgTitle;
+               global $wgOut, $wgUser, $wgRequest;
 
-               if ( ! wfRunHooks( 'AlternateEdit', array( &$this ) ) )
+               if ( !wfRunHooks( 'AlternateEdit', array( &$this ) ) )
                        return;
 
-               $fname = 'EditPage::edit';
-               wfProfileIn( $fname );
-               wfDebug( "$fname: enter\n" );
+               wfProfileIn( __METHOD__ );
+               wfDebug( __METHOD__.": enter\n" );
 
                // this is not an article
                $wgOut->setArticleFlag(false);
@@ -352,13 +351,28 @@ class EditPage {
 
                if( $this->live ) {
                        $this->livePreview();
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
+                       return;
+               }
+               
+               if( wfReadOnly() ) {
+                       $wgOut->readOnlyPage( $this->getContent() );
+                       wfProfileOut( __METHOD__ );
                        return;
                }
 
-               $permErrors = $this->dbTitle->getUserPermissionsErrors('edit', $wgUser);
-               if( !$this->dbTitle->exists() )
-                       $permErrors += array_diff( $this->dbTitle->getUserPermissionsErrors('create', $wgUser), $permErrors );
+               $permErrors = $this->mTitle->getUserPermissionsErrors('edit', $wgUser);
+               if( !$this->mTitle->exists() ) {
+                       # We can't use array_diff here, because that considers ANY TWO
+                       # ARRAYS TO BE EQUAL.  Thanks, PHP.
+                       $createErrors = $this->mTitle->getUserPermissionsErrors('create', $wgUser);
+                       foreach( $createErrors as $error ) {
+                               # in_array() actually *does* work as expected.
+                               if( !in_array( $error, $permErrors ) ) {
+                                       $permErrors[] = $error;
+                               }
+                       }
+               }
 
                # Ignore some permissions errors.
                $remove = array();
@@ -379,14 +393,12 @@ class EditPage {
                                }
                        }
                }
-               # array_diff returns elements in $permErrors that are not in $remove.
                $permErrors = array_diff( $permErrors, $remove );
 
-               if ( !empty($permErrors) )
-               {
-                       wfDebug( "$fname: User can't edit\n" );
+               if ( !empty($permErrors) ) {
+                       wfDebug( __METHOD__.": User can't edit\n" );
                        $wgOut->readOnlyPage( $this->getContent(), true, $permErrors );
-                       wfProfileOut( $fname );
+                       wfProfileOut( __METHOD__ );
                        return;
                } else {
                        if ( $this->save ) {
@@ -406,12 +418,12 @@ class EditPage {
                        }
                }
 
-               wfProfileIn( "$fname-business-end" );
+               wfProfileIn( __METHOD__."-business-end" );
 
                $this->isConflict = false;
                // css / js subpages of user pages get a special treatment
-               $this->isCssJsSubpage      = $this->dbTitle->isCssJsSubpage();
-               $this->isValidCssJsSubpage = $this->dbTitle->isValidCssJsSubpage();
+               $this->isCssJsSubpage      = $this->mTitle->isCssJsSubpage();
+               $this->isValidCssJsSubpage = $this->mTitle->isValidCssJsSubpage();
 
                /* Notice that we can't use isDeleted, because it returns true if article is ever deleted
                 * no matter it's current state
@@ -423,7 +435,7 @@ class EditPage {
                         * deletes. This is done on every preview and save request. Move it further down
                         * to only perform it on saves
                         */
-                       if ( $this->dbTitle->isDeleted() ) {
+                       if ( $this->mTitle->isDeleted() ) {
                                $this->lastDelete = $this->getLastDelete();
                                if ( !is_null($this->lastDelete) ) {
                                        $deletetime = $this->lastDelete->log_timestamp;
@@ -438,7 +450,7 @@ class EditPage {
                if( $this->formtype == 'initial' || $this->firsttime )
                        $this->showIntro();
        
-               if( $this->dbTitle->isTalkPage() ) {
+               if( $this->mTitle->isTalkPage() ) {
                        $wgOut->addWikiText( wfMsg( 'talkpagetext' ) );
                }
 
@@ -449,8 +461,8 @@ class EditPage {
 
                if ( 'save' == $this->formtype ) {
                        if ( !$this->attemptSave() ) {
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
                }
@@ -460,17 +472,17 @@ class EditPage {
                if ( 'initial' == $this->formtype || $this->firsttime ) {
                        if ($this->initialiseForm() === false) {
                                $this->noSuchSectionPage();
-                               wfProfileOut( "$fname-business-end" );
-                               wfProfileOut( $fname );
+                               wfProfileOut( __METHOD__."-business-end" );
+                               wfProfileOut( __METHOD__ );
                                return;
                        }
-                       if( !$this->dbTitle->getArticleId() ) 
-                               wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->dbTitle ) );
+                       if( !$this->mTitle->getArticleId() ) 
+                               wfRunHooks( 'EditFormPreloadText', array( &$this->textbox1, &$this->mTitle ) );
                }
 
                $this->showEditForm();
-               wfProfileOut( "$fname-business-end" );
-               wfProfileOut( $fname );
+               wfProfileOut( __METHOD__."-business-end" );
+               wfProfileOut( __METHOD__ );
        }
 
        /**
@@ -489,10 +501,10 @@ class EditPage {
                } elseif( $this->section == 'new' ) {
                        // Nothing *to* preview for new sections
                        return false;
-               } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->dbTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
+               } elseif( ( $wgRequest->getVal( 'preload' ) !== '' || $this->mTitle->exists() ) && $wgUser->getOption( 'previewonfirst' ) ) {
                        // Standard preference behaviour
                        return true;
-               } elseif( !$this->dbTitle->exists() && $this->dbTitle->getNamespace() == NS_CATEGORY ) {
+               } elseif( !$this->mTitle->exists() && $this->mTitle->getNamespace() == NS_CATEGORY ) {
                        // Categories are special
                        return true;
                } else {
@@ -569,7 +581,7 @@ class EditPage {
                        $this->watchthis = $request->getCheck( 'wpWatchthis' );
 
                        # Don't force edit summaries when a user is editing their own user or talk page
-                       if( ( $this->dbTitle->mNamespace == NS_USER || $this->dbTitle->mNamespace == NS_USER_TALK ) && $this->dbTitle->getText() == $wgUser->getName() ) {
+                       if( ( $this->mTitle->mNamespace == NS_USER || $this->mTitle->mNamespace == NS_USER_TALK ) && $this->mTitle->getText() == $wgUser->getName() ) {
                                $this->allowBlankSummary = true;
                        } else {
                                $this->allowBlankSummary = $request->getBool( 'wpIgnoreBlankSummary' );
@@ -625,17 +637,31 @@ class EditPage {
         */
        private function showIntro() {
                global $wgOut, $wgUser;
-               if( $this->suppressIntro ) return;
-               if( !$this->showCustomIntro() && !$this->dbTitle->exists() ) {
+               if( $this->suppressIntro )
+                       return;
+
+               # Show a warning message when someone creates/edits a user (talk) page but the user does not exists
+               if( $this->mTitle->getNamespace() == NS_USER || $this->mTitle->getNamespace() == NS_USER_TALK ) {
+                       $parts = explode( '/', $this->mTitle->getText(), 2 );
+                       $username = $parts[0];
+                       $id = User::idFromName( $username );
+                       $ip = User::isIP( $username );
+
+                       if ( $id == 0 && !$ip ) {
+                               $wgOut->addWikiText( '<div class="mw-userpage-userdoesnotexist error">' . wfMsg( 'userpage-userdoesnotexist', $username ) . '</div>' );
+                       }
+               }
+
+               if( !$this->showCustomIntro() && !$this->mTitle->exists() ) {
                        if( $wgUser->isLoggedIn() ) {
-                               $wgOut->addWikiText( wfMsg( 'newarticletext' ) );
+                               $wgOut->addWikiText( '<div class="mw-newarticletext">' . wfMsg( 'newarticletext' ) . '</div>' );
                        } else {
-                               $wgOut->addWikiText( wfMsg( 'newarticletextanon' ) );
+                               $wgOut->addWikiText( '<div class="mw-newarticletextanon">' . wfMsg( 'newarticletextanon' ) . '</div>' );
                        }
                        $this->showDeletionLog( $wgOut );
                }
        }
-       
+
        /**
         * Attempt to show a custom editing introduction, if supplied
         *
@@ -661,7 +687,7 @@ class EditPage {
         * Attempt submission (no UI)
         * @return one of the constants describing the result
         */
-       function internalAttemptSave( &$result ) {
+       function internalAttemptSave( &$result, $bot = false ) {
                global $wgSpamRegex, $wgFilterCallback, $wgUser, $wgOut, $wgParser;
                global $wgMaxArticleSize;
 
@@ -675,6 +701,17 @@ class EditPage {
                        return self::AS_HOOK_ERROR;
                }
 
+               # Check image redirect
+               if ( $this->mTitle->getNamespace() == NS_IMAGE &&
+                       Title::newFromRedirect( $this->textbox1 ) instanceof Title &&
+                       !$wgUser->isAllowed( 'upload' ) ) {
+                               if( $wgUser->isAnon() ) {
+                                       return self::AS_IMAGE_REDIRECT_ANON;
+                               } else {
+                                       return self::AS_IMAGE_REDIRECT_LOGGED;
+                               }
+               }
+
                # Reintegrate metadata
                if ( $this->mMetaData != '' ) $this->textbox1 .= "\n" . $this->mMetaData ;
                $this->mMetaData = '' ;
@@ -687,7 +724,7 @@ class EditPage {
                        wfProfileOut( $fname );
                        return self::AS_SPAM_ERROR;
                }
-               if ( $wgFilterCallback && $wgFilterCallback( $this->dbTitle, $this->textbox1, $this->section ) ) {
+               if ( $wgFilterCallback && $wgFilterCallback( $this->mTitle, $this->textbox1, $this->section ) ) {
                        # Error messages or other handling should be performed by the filter function
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
@@ -704,7 +741,7 @@ class EditPage {
                        wfProfileOut( $fname );
                        return self::AS_HOOK_ERROR_EXPECTED;
                }
-               if ( $wgUser->isBlockedFrom( $this->uiTitle, false ) ) {
+               if ( $wgUser->isBlockedFrom( $this->mTitle, false ) ) {
                        # Check block state against master, thus 'false'.
                        wfProfileOut( "$fname-checks" );
                        wfProfileOut( $fname );
@@ -754,25 +791,33 @@ class EditPage {
                wfProfileOut( "$fname-checks" );
 
                # If article is new, insert it.
-               $aid = $this->dbTitle->getArticleID( GAID_FOR_UPDATE );
+               $aid = $this->mTitle->getArticleID( GAID_FOR_UPDATE );
                if ( 0 == $aid ) {
 
                        // Late check for create permission, just in case *PARANOIA*
-                       if ( !$this->dbTitle->userCan( 'create' ) ) {
+                       if ( !$this->mTitle->userCan( 'create' ) ) {
                                wfDebug( "$fname: no create permission\n" );
                                wfProfileOut( $fname );
                                return self::AS_NO_CREATE_PERMISSION;
                        }
 
                        # Don't save a new article if it's blank.
-                       if ( ( '' == $this->textbox1 ) ) {
+                       if ( '' == $this->textbox1 ) {
                                        wfProfileOut( $fname );
                                        return self::AS_BLANK_ARTICLE;
                        }
 
-                       $isComment=($this->section=='new');
+                       // Run post-section-merge edit filter
+                       if ( !wfRunHooks( 'EditFilterMerged', array( $this, $this->textbox1, &$this->hookError ) ) ) {
+                               # Error messages etc. could be handled within the hook...
+                               wfProfileOut( $fname );
+                               return self::AS_HOOK_ERROR;
+                       }
+
+                       $isComment = ( $this->section == 'new' );
+                       
                        $this->mArticle->insertNewArticle( $this->textbox1, $this->summary,
-                               $this->minoredit, $this->watchthis, false, $isComment);
+                               $this->minoredit, $this->watchthis, false, $isComment, $bot);
 
                        wfProfileOut( $fname );
                        return self::AS_SUCCESS_NEW_ARTICLE;
@@ -845,6 +890,13 @@ class EditPage {
 
                $oldtext = $this->mArticle->getContent();
 
+               // Run post-section-merge edit filter
+               if ( !wfRunHooks( 'EditFilterMerged', array( $this, $text, &$this->hookError ) ) ) {
+                       # Error messages etc. could be handled within the hook...
+                       wfProfileOut( $fname );
+                       return self::AS_HOOK_ERROR;
+               }
+
                # Handle the user preference to force summaries here, but not for null edits
                if( $this->section != 'new' && !$this->allowBlankSummary && $wgUser->getOption( 'forceeditsummary')
                        &&  0 != strcmp($oldtext, $text) && !Article::getRedirectAutosummary( $text )) {
@@ -904,12 +956,12 @@ class EditPage {
                if ( $this->kblength > $wgMaxArticleSize ) {
                        $this->tooBig = true;
                        wfProfileOut( $fname );
-                       return self::AS_MAX_ARTICLE_SIZE_EXCEDED;
+                       return self::AS_MAX_ARTICLE_SIZE_EXCEEDED;
                }
 
                # update the article here
                if( $this->mArticle->updateArticle( $text, $this->summary, $this->minoredit,
-                       $this->watchthis, '', $sectionanchor ) ) {
+                       $this->watchthis, $bot, $sectionanchor ) ) {
                        wfProfileOut( $fname );
                        return self::AS_SUCCESS_UPDATE;
                } else {
@@ -929,8 +981,8 @@ class EditPage {
                $this->textbox1 = $this->getContent(false);
                if ($this->textbox1 === false) return false;
 
-               if ( !$this->mArticle->exists() && $this->dbTitle->getNamespace() == NS_MEDIAWIKI )
-                       $this->textbox1 = wfMsgWeirdKey( $this->dbTitle->getText() );
+               if ( !$this->mArticle->exists() && $this->mTitle->getNamespace() == NS_MEDIAWIKI )
+                       $this->textbox1 = wfMsgWeirdKey( $this->mTitle->getText() );
                wfProxyCheck();
                return true;
        }
@@ -942,7 +994,7 @@ class EditPage {
         *                      near the top, for captchas and the like.
         */
        function showEditForm( $formCallback=null ) {
-               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize;
+               global $wgOut, $wgUser, $wgLang, $wgContLang, $wgMaxArticleSize, $wgTitle;
 
                $fname = 'EditPage::showEditForm';
                wfProfileIn( $fname );
@@ -961,7 +1013,7 @@ class EditPage {
                }
 
                if ( $this->isConflict ) {
-                       $s = wfMsg( 'editconflict', $this->uiTitle->getPrefixedText() );
+                       $s = wfMsg( 'editconflict', $wgTitle->getPrefixedText() );
                        $wgOut->setPageTitle( $s );
                        $wgOut->addWikiText( wfMsg( 'explainconflict' ) );
 
@@ -969,12 +1021,11 @@ class EditPage {
                        $this->textbox1 = $this->getContent();
                        $this->edittime = $this->mArticle->getTimestamp();
                } else {
-
                        if( $this->section != '' ) {
                                if( $this->section == 'new' ) {
-                                       $s = wfMsg('editingcomment', $this->uiTitle->getPrefixedText() );
+                                       $s = wfMsg('editingcomment', $wgTitle->getPrefixedText() );
                                } else {
-                                       $s = wfMsg('editingsection', $this->uiTitle->getPrefixedText() );
+                                       $s = wfMsg('editingsection', $wgTitle->getPrefixedText() );
                                        $matches = array();
                                        if( !$this->summary && !$this->preview && !$this->diff ) {
                                                preg_match( "/^(=+)(.+)\\1/mi",
@@ -989,7 +1040,7 @@ class EditPage {
                                        }
                                }
                        } else {
-                               $s = wfMsg( 'editing', $this->uiTitle->getPrefixedText() );
+                               $s = wfMsg( 'editing', $wgTitle->getPrefixedText() );
                        }
                        $wgOut->setPageTitle( $s );
 
@@ -1005,7 +1056,7 @@ class EditPage {
                                $wgOut->addWikiText( '<div id="mw-missingcommentheader">' . wfMsg( 'missingcommentheader' ) . '</div>' );
                        }
 
-                       if( !$this->hookError == '' ) {
+                       if( $this->hookError !== '' ) {
                                $wgOut->addWikiText( $this->hookError );
                        }
 
@@ -1014,9 +1065,13 @@ class EditPage {
                        }
                        if ( isset( $this->mArticle ) && isset( $this->mArticle->mRevision ) ) {
                        // Let sysop know that this will make private content public if saved
-                               if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
+                               
+                               if( !$this->mArticle->mRevision->userCan( Revision::DELETED_TEXT ) ) {
+                                       $wgOut->addWikiText( wfMsg( 'rev-deleted-text-permission' ) );
+                               } else if( $this->mArticle->mRevision->isDeleted( Revision::DELETED_TEXT ) ) {
                                        $wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
                                }
+                               
                                if( !$this->mArticle->mRevision->isCurrent() ) {
                                        $this->mArticle->setOldSubtitle( $this->mArticle->mRevision->getId() );
                                        $wgOut->addWikiText( wfMsg( 'editingold' ) );
@@ -1025,38 +1080,38 @@ class EditPage {
                }
 
                if( wfReadOnly() ) {
-                       $wgOut->addWikiText( wfMsg( 'readonlywarning' ) );
+                       $wgOut->addHTML( '<div id="mw-read-only-warning">'.wfMsgWikiHTML( 'readonlywarning' ).'</div>' );
                } elseif( $wgUser->isAnon() && $this->formtype != 'preview' ) {
-                       $wgOut->addWikiText( wfMsg( 'anoneditwarning' ) );
+                       $wgOut->addHTML( '<div id="mw-anon-edit-warning">'.wfMsgWikiHTML( 'anoneditwarning' ).'</div>' );
                } else {
                        if( $this->isCssJsSubpage && $this->formtype != 'preview' ) {
                                # Check the skin exists
                                if( $this->isValidCssJsSubpage ) {
                                        $wgOut->addWikiText( wfMsg( 'usercssjsyoucanpreview' ) );
                                } else {
-                                       $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $this->uiTitle->getSkinFromCssJsSubpage() ) );
+                                       $wgOut->addWikiText( wfMsg( 'userinvalidcssjstitle', $wgTitle->getSkinFromCssJsSubpage() ) );
                                }
                        }
                }
 
-               if( $this->dbTitle->getNamespace() == NS_MEDIAWIKI ) {
+               if( $this->mTitle->getNamespace() == NS_MEDIAWIKI ) {
                        # Show a warning if editing an interface message
                        $wgOut->addWikiText( wfMsg( 'editinginterface' ) );
-               } elseif( $this->dbTitle->isProtected( 'edit' ) ) {
+               } elseif( $this->mTitle->isProtected( 'edit' ) ) {
                        # Is the title semi-protected?
-                       if( $this->dbTitle->isSemiProtected() ) {
+                       if( $this->mTitle->isSemiProtected() ) {
                                $notice = wfMsg( 'semiprotectedpagewarning' );
                                if( wfEmptyMsg( 'semiprotectedpagewarning', $notice ) || $notice == '-' )
                                        $notice = '';
                        } else {
-                       # Then it must be protected based on static groups (regular)
+                               # Then it must be protected based on static groups (regular)
                                $notice = wfMsg( 'protectedpagewarning' );
                        }
                        $wgOut->addWikiText( $notice );
                }
-               if ( $this->dbTitle->isCascadeProtected() ) {
+               if ( $this->mTitle->isCascadeProtected() ) {
                        # Is this page under cascading protection from some source pages?
-                       list($cascadeSources, /* $restrictions */) = $this->dbTitle->getCascadeProtectionSources();
+                       list($cascadeSources, /* $restrictions */) = $this->mTitle->getCascadeProtectionSources();
                        if ( count($cascadeSources) > 0 ) {
                                # Explain, and list the titles responsible
                                $notice = wfMsgExt( 'cascadeprotectedwarning', array('parsemag'), count($cascadeSources) ) . "\n";
@@ -1066,6 +1121,9 @@ class EditPage {
                        }
                        $wgOut->addWikiText( $notice );
                }
+               if( !$this->mTitle->exists() && $this->mTitle->getRestrictions( 'create' ) != array() ){
+                       $wgOut->addWikiText( wfMsg( 'titleprotectedwarning' ) );
+               }
 
                if ( $this->kblength === false ) {
                        $this->kblength = (int)(strlen( $this->textbox1 ) / 1024);
@@ -1091,12 +1149,12 @@ class EditPage {
 
                $q = 'action=submit';
                #if ( "no" == $redirect ) { $q .= "&redirect=no"; }
-               $action = $this->uiTitle->escapeLocalURL( $q );
+               $action = $wgTitle->escapeLocalURL( $q );
 
                $summary = wfMsg('summary');
                $subject = wfMsg('subject');
 
-               $cancel = $sk->makeKnownLink( $this->uiTitle->getPrefixedText(),
+               $cancel = $sk->makeKnownLink( $wgTitle->getPrefixedText(),
                                wfMsgExt('cancel', array('parseinline')) );
                $edithelpurl = Skin::makeInternalOrExternalUrl( wfMsgForContent( 'edithelppage' ));
                $edithelp = '<a target="helpwindow" href="'.$edithelpurl.'">'.
@@ -1122,10 +1180,10 @@ class EditPage {
                        if( $wgUser->getOption( 'watchdefault' ) ) {
                                # Watch all edits
                                $this->watchthis = true;
-                       } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->dbTitle->exists() ) {
+                       } elseif( $wgUser->getOption( 'watchcreations' ) && !$this->mTitle->exists() ) {
                                # Watch creations
                                $this->watchthis = true;
-                       } elseif( $this->dbTitle->userIsWatching() ) {
+                       } elseif( $this->mTitle->userIsWatching() ) {
                                # Already watched
                                $this->watchthis = true;
                        }
@@ -1157,12 +1215,12 @@ class EditPage {
                if( $this->section == 'new' ) {
                        $commentsubject="<span id='wpSummaryLabel'><label for='wpSummary'>{$subject}:</label></span>\n<div class='editOptions'>\n<input tabindex='1' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
                        $editsummary = '';
-                       $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->dbTitle )."</div>\n" : '';
+                       $subjectpreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('subject-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
                        $summarypreview = '';
                } else {
                        $commentsubject = '';
                        $editsummary="<span id='wpSummaryLabel'><label for='wpSummary'>{$summary}:</label></span>\n<div class='editOptions'>\n<input tabindex='2' type='text' value=\"$summarytext\" name='wpSummary' id='wpSummary' maxlength='200' size='60' /><br />";
-                       $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->dbTitle )."</div>\n" : '';
+                       $summarypreview = $summarytext && $this->preview ? "<div class=\"mw-summary-preview\">".wfMsg('summary-preview').':'.$sk->commentBlock( $this->summary, $this->mTitle )."</div>\n" : '';
                        $subjectpreview = '';
                }
 
@@ -1305,12 +1363,12 @@ END
                if ( $this->isConflict ) {
                        $wgOut->addWikiText( '==' . wfMsg( "yourdiff" ) . '==' );
 
-                       $de = new DifferenceEngine( $this->dbTitle );
+                       $de = new DifferenceEngine( $this->mTitle );
                        $de->setText( $this->textbox2, $this->textbox1 );
                        $de->showDiff( wfMsg( "yourtext" ), wfMsg( "storedversion" ) );
 
                        $wgOut->addWikiText( '==' . wfMsg( "yourtext" ) . '==' );
-                       $wgOut->addHTML( "<textarea tabindex=6 id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}' wrap='virtual'>"
+                       $wgOut->addHTML( "<textarea tabindex='6' id='wpTextbox2' name=\"wpTextbox2\" rows='{$rows}' cols='{$cols}'>"
                                . htmlspecialchars( $this->safeUnicodeOutput( $this->textbox2 ) ) . "\n</textarea>" );
                }
                $wgOut->addHTML( $this->editFormTextBottom );
@@ -1342,12 +1400,12 @@ END
                global $wgOut;
 
                $wgOut->addHTML( '<div id="wikiPreview">' );
-               if($this->dbTitle->getNamespace() == NS_CATEGORY) {
+               if($this->mTitle->getNamespace() == NS_CATEGORY) {
                        $this->mArticle->openShowCategory();
                }
                wfRunHooks( 'OutputPageBeforeHTML',array( &$wgOut, &$text ) );
                $wgOut->addHTML( $text );
-               if($this->dbTitle->getNamespace() == NS_CATEGORY) {
+               if($this->mTitle->getNamespace() == NS_CATEGORY) {
                        $this->mArticle->closeShowCategory();
                }
                $wgOut->addHTML( '</div>' );
@@ -1368,7 +1426,7 @@ END
                $wgOut->addHTML( '<script type="'.$wgJsMimeType.'" src="' .
                        htmlspecialchars( "$wgStylePath/common/preview.js?$wgStyleVersion" ) .
                        '"></script>' . "\n" );
-               $liveAction = $this->uiTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
+               $liveAction = $wgTitle->getLocalUrl( 'action=submit&wpPreview=true&live=true' );
                return "return !lpDoPreview(" .
                        "editform.wpTextbox1.value," .
                        '"' . $liveAction . '"' . ")";
@@ -1388,8 +1446,8 @@ END
                               'log_comment',
                               'log_params',
                               'user_name', ),
-                       array( 'log_namespace' => $this->dbTitle->getNamespace(),
-                              'log_title' => $this->dbTitle->getDBkey(),
+                       array( 'log_namespace' => $this->mTitle->getNamespace(),
+                              'log_title' => $this->mTitle->getDBkey(),
                               'log_type' => 'delete',
                               'log_action' => 'delete',
                               'user_id=log_user' ),
@@ -1417,17 +1475,12 @@ END
 
                if ( $this->mTriedSave && !$this->mTokenOk ) {
                        if ( $this->mTokenOkExceptSuffix ) {
-                               $msg = 'token_suffix_mismatch';
+                               $note = wfMsg( 'token_suffix_mismatch' );
                        } else {
-                               $msg = 'session_fail_preview';
+                               $note = wfMsg( 'session_fail_preview' );
                        }
                } else {
-                       $msg = 'previewnote';
-               }
-               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
-                       "<div class='previewnote'>" . $wgOut->parse( wfMsg( $msg ) ) . "</div>\n";
-               if ( $this->isConflict ) {
-                       $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+                       $note = wfMsg( 'previewnote' );
                }
 
                $parserOptions = ParserOptions::newFromUser( $wgUser );
@@ -1445,16 +1498,15 @@ END
                # XXX: stupid php bug won't let us use $wgTitle->isCssJsSubpage() here
 
                if ( $this->isCssJsSubpage ) {
-                       if(preg_match("/\\.css$/", $this->dbTitle->getText() ) ) {
+                       if(preg_match("/\\.css$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('usercsspreview');
-                       } else if(preg_match("/\\.js$/", $this->dbTitle->getText() ) ) {
+                       } else if(preg_match("/\\.js$/", $this->mTitle->getText() ) ) {
                                $previewtext = wfMsg('userjspreview');
                        }
                        $parserOptions->setTidy(true);
-                       $parserOutput = $wgParser->parse( $previewtext , $this->dbTitle, $parserOptions );
+                       $parserOutput = $wgParser->parse( $previewtext , $this->mTitle, $parserOptions );
                        $wgOut->addHTML( $parserOutput->mText );
-                       wfProfileOut( $fname );
-                       return $previewhead;
+                       $previewHTML = '';
                } else {
                        $toparse = $this->textbox1;
 
@@ -1466,22 +1518,38 @@ END
 
                        if ( $this->mMetaData != "" ) $toparse .= "\n" . $this->mMetaData ;
                        $parserOptions->setTidy(true);
+                       $parserOptions->enableLimitReport();
                        $parserOutput = $wgParser->parse( $this->mArticle->preSaveTransform( $toparse ) ."\n\n",
-                                       $this->dbTitle, $parserOptions );
+                                       $this->mTitle, $parserOptions );
 
                        $previewHTML = $parserOutput->getText();
                        $wgOut->addParserOutputNoText( $parserOutput );
                        
                        # ParserOutput might have altered the page title, so reset it
-                       $wgOut->setPageTitle( wfMsg( 'editing', $this->uiTitle->getPrefixedText() ) );                  
+                       # Also, use the title defined by DISPLAYTITLE magic word when present
+                       if( ( $dt = $parserOutput->getDisplayTitle() ) !== false ) {
+                               $wgOut->setPageTitle( wfMsg( 'editing', $dt ) );
+                       } else {
+                               $wgOut->setPageTitle( wfMsg( 'editing', $wgTitle->getPrefixedText() ) );                        
+                       }
 
                        foreach ( $parserOutput->getTemplates() as $ns => $template)
                                foreach ( array_keys( $template ) as $dbk)
                                        $this->mPreviewTemplates[] = Title::makeTitle($ns, $dbk);
 
-                       wfProfileOut( $fname );
-                       return $previewhead . $previewHTML;
+                       if ( count( $parserOutput->getWarnings() ) ) {
+                               $note .= "\n\n" . implode( "\n\n", $parserOutput->getWarnings() );
+                       }
                }
+
+               $previewhead = '<h2>' . htmlspecialchars( wfMsg( 'preview' ) ) . "</h2>\n" .
+                       "<div class='previewnote'>" . $wgOut->parse( $note ) . "</div>\n";
+               if ( $this->isConflict ) {
+                       $previewhead.='<h2>' . htmlspecialchars( wfMsg( 'previewconflict' ) ) . "</h2>\n";
+               }
+
+               wfProfileOut( $fname );
+               return $previewhead . $previewHTML;
        }
 
        /**
@@ -1495,7 +1563,7 @@ END
                # (This happens when a user is blocked during edit, for instance)
                $first = $this->firsttime || ( !$this->save && $this->textbox1 == '' );
                if( $first ) {
-                       $source = $this->dbTitle->exists() ? $this->getContent() : false;
+                       $source = $this->mTitle->exists() ? $this->getContent() : false;
                } else {
                        $source = $this->textbox1;
                }
@@ -1506,7 +1574,7 @@ END
                        $cols = $wgUser->getOption( 'cols' );
                        $attribs = array( 'id' => 'wpTextbox1', 'name' => 'wpTextbox1', 'cols' => $cols, 'rows' => $rows, 'readonly' => 'readonly' );
                        $wgOut->addHtml( '<hr />' );
-                       $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->dbTitle->getPrefixedText() ) );
+                       $wgOut->addWikiText( wfMsg( $first ? 'blockedoriginalsource' : 'blockededitsource', $this->mTitle->getPrefixedText() ) );
                        $wgOut->addHtml( wfOpenElement( 'textarea', $attribs ) . htmlspecialchars( $source ) . wfCloseElement( 'textarea' ) );
                }
        }
@@ -1515,18 +1583,18 @@ END
         * Produce the stock "please login to edit pages" page
         */
        function userNotLoggedInPage() {
-               global $wgUser, $wgOut;
+               global $wgUser, $wgOut, $wgTitle;
                $skin = $wgUser->getSkin();
 
                $loginTitle = SpecialPage::getTitleFor( 'Userlogin' );
-               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $this->uiTitle->getPrefixedUrl() );
+               $loginLink = $skin->makeKnownLinkObj( $loginTitle, wfMsgHtml( 'loginreqlink' ), 'returnto=' . $wgTitle->getPrefixedUrl() );
 
                $wgOut->setPageTitle( wfMsg( 'whitelistedittitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
                $wgOut->addHtml( wfMsgWikiHtml( 'whitelistedittext', $loginLink ) );
-               $wgOut->returnToMain( false, $this->uiTitle );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1534,14 +1602,14 @@ END
         * they have attempted to edit a nonexistant section.
         */
        function noSuchSectionPage() {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'nosuchsectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
                $wgOut->addWikiText( wfMsg( 'nosuchsectiontext', $this->section ) );
-               $wgOut->returnToMain( false, $this->uiTitle );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1550,17 +1618,19 @@ END
         * @param $match Text which triggered one or more filters
         */
        function spamPage( $match = false ) {
-               global $wgOut;
+               global $wgOut, $wgTitle;
 
                $wgOut->setPageTitle( wfMsg( 'spamprotectiontitle' ) );
                $wgOut->setRobotPolicy( 'noindex,nofollow' );
                $wgOut->setArticleRelated( false );
 
+               $wgOut->addHtml( '<div id="spamprotected">' );
                $wgOut->addWikiText( wfMsg( 'spamprotectiontext' ) );
                if ( $match )
-                       $wgOut->addWikiText( wfMsg( 'spamprotectionmatch', "<nowiki>{$match}</nowiki>" ) );
+                       $wgOut->addWikiText( wfMsg( 'spamprotectionmatch',wfEscapeWikiText( $match ) ) );
+               $wgOut->addHtml( '</div>' );
 
-               $wgOut->returnToMain( false, $this->uiTitle );
+               $wgOut->returnToMain( false, $wgTitle );
        }
 
        /**
@@ -1575,7 +1645,7 @@ END
 
                // This is the revision the editor started from
                $baseRevision = Revision::loadFromTimestamp(
-                       $db, $this->dbTitle, $this->edittime );
+                       $db, $this->mTitle, $this->edittime );
                if( is_null( $baseRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
@@ -1584,7 +1654,7 @@ END
 
                // The current state, we want to merge updates into it
                $currentRevision =  Revision::loadFromTitle(
-                       $db, $this->dbTitle );
+                       $db, $this->mTitle );
                if( is_null( $currentRevision ) ) {
                        wfProfileOut( $fname );
                        return false;
@@ -1896,7 +1966,8 @@ END
                        'title'     => wfMsg( 'tooltip-diff' ).' ['.wfMsg( 'accesskey-diff' ).']',
                );
                $buttons['diff'] = wfElement('input', $temp, '');
-
+               
+               wfRunHooks( 'EditPageBeforeEditButtons', array( &$this, &$buttons ) );
                return $buttons;
        }
 
@@ -1946,7 +2017,7 @@ END
                $oldtitle = wfMsgExt( 'currentrev', array('parseinline') );
                $newtitle = wfMsgExt( 'yourtext', array('parseinline') );
                if ( $oldtext !== false  || $newtext != '' ) {
-                       $de = new DifferenceEngine( $this->dbTitle );
+                       $de = new DifferenceEngine( $this->mTitle );
                        $de->setText( $oldtext, $newtext );
                        $difftext = $de->getDiff( $oldtitle, $newtitle );
                        $de->showDiffStyle();
@@ -2086,7 +2157,7 @@ END
         * @param OutputPage $out
         */
        private function showDeletionLog( $out ) {
-               $title = $this->dbTitle;
+               $title = $this->mTitle;
                $reader = new LogReader(
                        new FauxRequest(
                                array(
@@ -2109,27 +2180,26 @@ END
         * @return bool false if output is done, true if the rest of the form should be displayed
         */
        function attemptSave() {
-               global $wgUser, $wgOut;
+               global $wgUser, $wgOut, $wgTitle, $wgRequest;
 
                $resultDetails = false;
-               $value = $this->internalAttemptSave( $resultDetails );
+               $value = $this->internalAttemptSave( $resultDetails, $wgUser->isAllowed('bot') && $wgRequest->getBool('bot', true) );
                
-               if( $value == AS_SUCCESS_UPDATE || $value = AS_SUCCESS_NEW_ARTICLE ) {
+               if( $value == self::AS_SUCCESS_UPDATE || $value == self::AS_SUCCESS_NEW_ARTICLE ) {
                        $this->didSave = true;
                }
-               
-               switch ($value)
-               {
+
+               switch ($value) {
                        case self::AS_HOOK_ERROR_EXPECTED:
                        case self::AS_CONTENT_TOO_BIG:
                        case self::AS_ARTICLE_WAS_DELETED:
                        case self::AS_CONFLICT_DETECTED:
                        case self::AS_SUMMARY_NEEDED:
                        case self::AS_TEXTBOX_EMPTY:
-                       case self::AS_MAX_ARTICLE_SIZE_EXCEDED:
+                       case self::AS_MAX_ARTICLE_SIZE_EXCEEDED:
                        case self::AS_END:
                                return true;
-                       
+
                        case self::AS_HOOK_ERROR:
                        case self::AS_FILTERING:
                        case self::AS_SUCCESS_NEW_ARTICLE:
@@ -2144,6 +2214,10 @@ END
                                $this->blockedPage();
                                return false;
 
+                       case self::AS_IMAGE_REDIRECT_ANON:
+                               $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
+                               return false;
+
                        case self::AS_READ_ONLY_PAGE_ANON:
                                $this->userNotLoggedInPage();
                                return false;
@@ -2162,8 +2236,12 @@ END
                                return;
                        
                        case self::AS_BLANK_ARTICLE:
-                               $wgOut->redirect( $this->uiTitle->getFullURL() );
+                               $wgOut->redirect( $wgTitle->getFullURL() );
                                return false;
+
+                       case self::AS_IMAGE_REDIRECT_LOGGED:
+                               $wgOut->permissionRequired( 'upload' );
+                               return false;
                }
        }
 }