1 files changed, 199 insertions, 0 deletions
diff --git a/www/wiki/maintenance/cleanupTitles.php b/www/wiki/maintenance/cleanupTitles.php
new file mode 100644
index 00000000..5b441f90
--- /dev/null
+++ b/www/wiki/maintenance/cleanupTitles.php
@@ -0,0 +1,199 @@
+<?php
+/**
+ * Clean up broken, unparseable titles.
+ *
+ * Copyright © 2005 Brion Vibber <brion@pobox.com>
+ * https://www.mediawiki.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @author Brion Vibber <brion at pobox.com>
+ * @ingroup Maintenance
+ */
+
+use MediaWiki\MediaWikiServices;
+
+require_once __DIR__ . '/cleanupTable.inc';
+
+/**
+ * Maintenance script to clean up broken, unparseable titles.
+ *
+ * @ingroup Maintenance
+ */
+class TitleCleanup extends TableCleanup {
+	public function __construct() {
+		parent::__construct();
+		$this->addDescription( 'Script to clean up broken, unparseable titles' );
+	}
+
+	/**
+	 * @param object $row
+	 */
+	protected function processRow( $row ) {
+		global $wgContLang;
+		$display = Title::makeName( $row->page_namespace, $row->page_title );
+		$verified = $wgContLang->normalize( $display );
+		$title = Title::newFromText( $verified );
+
+		if ( !is_null( $title )
+			&& $title->canExist()
+			&& $title->getNamespace() == $row->page_namespace
+			&& $title->getDBkey() === $row->page_title
+		) {
+			$this->progress( 0 ); // all is fine
+
+			return;
+		}
+
+		if ( $row->page_namespace == NS_FILE && $this->fileExists( $row->page_title ) ) {
+			$this->output( "file $row->page_title needs cleanup, please run cleanupImages.php.\n" );
+			$this->progress( 0 );
+		} elseif ( is_null( $title ) ) {
+			$this->output( "page $row->page_id ($display) is illegal.\n" );
+			$this->moveIllegalPage( $row );
+			$this->progress( 1 );
+		} else {
+			$this->output( "page $row->page_id ($display) doesn't match self.\n" );
+			$this->moveInconsistentPage( $row, $title );
+			$this->progress( 1 );
+		}
+	}
+
+	/**
+	 * @param string $name
+	 * @return bool
+	 */
+	protected function fileExists( $name ) {
+		// XXX: Doesn't actually check for file existence, just presence of image record.
+		// This is reasonable, since cleanupImages.php only iterates over the image table.
+		$dbr = $this->getDB( DB_REPLICA );
+		$row = $dbr->selectRow( 'image', [ 'img_name' ], [ 'img_name' => $name ], __METHOD__ );
+
+		return $row !== false;
+	}
+
+	/**
+	 * @param object $row
+	 */
+	protected function moveIllegalPage( $row ) {
+		$legal = 'A-Za-z0-9_/\\\\-';
+		$legalized = preg_replace_callback( "!([^$legal])!",
+			[ $this, 'hexChar' ],
+			$row->page_title );
+		if ( $legalized == '.' ) {
+			$legalized = '(dot)';
+		}
+		if ( $legalized == '_' ) {
+			$legalized = '(space)';
+		}
+		$legalized = 'Broken/' . $legalized;
+
+		$title = Title::newFromText( $legalized );
+		if ( is_null( $title ) ) {
+			$clean = 'Broken/id:' . $row->page_id;
+			$this->output( "Couldn't legalize; form '$legalized' still invalid; using '$clean'\n" );
+			$title = Title::newFromText( $clean );
+		} elseif ( $title->exists() ) {
+			$clean = 'Broken/id:' . $row->page_id;
+			$this->output( "Legalized for '$legalized' exists; using '$clean'\n" );
+			$title = Title::newFromText( $clean );
+		}
+
+		$dest = $title->getDBkey();
+		if ( $this->dryrun ) {
+			$this->output( "DRY RUN: would rename $row->page_id ($row->page_namespace," .
+				"'$row->page_title') to ($row->page_namespace,'$dest')\n" );
+		} else {
+			$this->output( "renaming $row->page_id ($row->page_namespace," .
+				"'$row->page_title') to ($row->page_namespace,'$dest')\n" );
+			$dbw = $this->getDB( DB_MASTER );
+			$dbw->update( 'page',
+				[ 'page_title' => $dest ],
+				[ 'page_id' => $row->page_id ],
+				__METHOD__ );
+		}
+	}
+
+	/**
+	 * @param object $row
+	 * @param Title $title
+	 */
+	protected function moveInconsistentPage( $row, Title $title ) {
+		if ( $title->exists( Title::GAID_FOR_UPDATE )
+			|| $title->getInterwiki()
+			|| !$title->canExist()
+		) {
+			$titleImpossible = $title->getInterwiki() || !$title->canExist();
+			if ( $titleImpossible ) {
+				$prior = $title->getPrefixedDBkey();
+			} else {
+				$prior = $title->getDBkey();
+			}
+
+			# Old cleanupTitles could move articles there. See T25147.
+			$ns = $row->page_namespace;
+			if ( $ns < 0 ) {
+				$ns = 0;
+			}
+
+			# Namespace which no longer exists. Put the page in the main namespace
+			# since we don't have any idea of the old namespace name. See T70501.
+			if ( !MWNamespace::exists( $ns ) ) {
+				$ns = 0;
+			}
+
+			if ( !$titleImpossible && !$title->exists() ) {
+				// Looks like the current title, after cleaning it up, is valid and available
+				$clean = $prior;
+			} else {
+				$clean = 'Broken/' . $prior;
+			}
+			$verified = Title::makeTitleSafe( $ns, $clean );
+			if ( !$verified || $verified->exists() ) {
+				$blah = "Broken/id:" . $row->page_id;
+				$this->output( "Couldn't legalize; form '$clean' exists; using '$blah'\n" );
+				$verified = Title::makeTitleSafe( $ns, $blah );
+			}
+			$title = $verified;
+		}
+		if ( is_null( $title ) ) {
+			$this->fatalError( "Something awry; empty title." );
+		}
+		$ns = $title->getNamespace();
+		$dest = $title->getDBkey();
+
+		if ( $this->dryrun ) {
+			$this->output( "DRY RUN: would rename $row->page_id ($row->page_namespace," .
+				"'$row->page_title') to ($ns,'$dest')\n" );
+		} else {
+			$this->output( "renaming $row->page_id ($row->page_namespace," .
+				"'$row->page_title') to ($ns,'$dest')\n" );
+			$dbw = $this->getDB( DB_MASTER );
+			$dbw->update( 'page',
+				[
+					'page_namespace' => $ns,
+					'page_title' => $dest
+				],
+				[ 'page_id' => $row->page_id ],
+				__METHOD__ );
+			MediaWikiServices::getInstance()->getLinkCache()->clear();
+		}
+	}
+}
+
+$maintClass = TitleCleanup::class;
+require_once RUN_MAINTENANCE_IF_MAIN;