1 files changed, 119 insertions, 0 deletions
diff --git a/www/wiki/maintenance/findMissingFiles.php b/www/wiki/maintenance/findMissingFiles.php
new file mode 100644
index 00000000..4997cabb
--- /dev/null
+++ b/www/wiki/maintenance/findMissingFiles.php
@@ -0,0 +1,119 @@
+<?php
+/**
+ * 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
+ */
+
+require_once __DIR__ . '/Maintenance.php';
+
+class FindMissingFiles extends Maintenance {
+	function __construct() {
+		parent::__construct();
+
+		$this->addDescription( 'Find registered files with no corresponding file.' );
+		$this->addOption( 'start', 'Start after this file name', false, true );
+		$this->addOption( 'mtimeafter', 'Only include files changed since this time', false, true );
+		$this->addOption( 'mtimebefore', 'Only includes files changed before this time', false, true );
+		$this->setBatchSize( 300 );
+	}
+
+	function execute() {
+		$lastName = $this->getOption( 'start', '' );
+
+		$repo = RepoGroup::singleton()->getLocalRepo();
+		$dbr = $repo->getReplicaDB();
+		$be = $repo->getBackend();
+		$batchSize = $this->getBatchSize();
+
+		$mtime1 = $dbr->timestampOrNull( $this->getOption( 'mtimeafter', null ) );
+		$mtime2 = $dbr->timestampOrNull( $this->getOption( 'mtimebefore', null ) );
+
+		$joinTables = [];
+		$joinConds = [];
+		if ( $mtime1 || $mtime2 ) {
+			$joinTables[] = 'page';
+			$joinConds['page'] = [ 'INNER JOIN',
+				[ 'page_title = img_name', 'page_namespace' => NS_FILE ] ];
+			$joinTables[] = 'logging';
+			$on = [ 'log_page = page_id', 'log_type' => [ 'upload', 'move', 'delete' ] ];
+			if ( $mtime1 ) {
+				$on[] = "log_timestamp > {$dbr->addQuotes($mtime1)}";
+			}
+			if ( $mtime2 ) {
+				$on[] = "log_timestamp < {$dbr->addQuotes($mtime2)}";
+			}
+			$joinConds['logging'] = [ 'INNER JOIN', $on ];
+		}
+
+		do {
+			$res = $dbr->select(
+				array_merge( [ 'image' ], $joinTables ),
+				[ 'name' => 'img_name' ],
+				[ "img_name > " . $dbr->addQuotes( $lastName ) ],
+				__METHOD__,
+				// DISTINCT causes a pointless filesort
+				[ 'ORDER BY' => 'name', 'GROUP BY' => 'name',
+					'LIMIT' => $batchSize ],
+				$joinConds
+			);
+
+			// Check if any of these files are missing...
+			$pathsByName = [];
+			foreach ( $res as $row ) {
+				$file = $repo->newFile( $row->name );
+				$pathsByName[$row->name] = $file->getPath();
+				$lastName = $row->name;
+			}
+			$be->preloadFileStat( [ 'srcs' => $pathsByName ] );
+			foreach ( $pathsByName as $path ) {
+				if ( $be->fileExists( [ 'src' => $path ] ) === false ) {
+					$this->output( "$path\n" );
+				}
+			}
+
+			// Find all missing old versions of any of the files in this batch...
+			if ( count( $pathsByName ) ) {
+				$ores = $dbr->select( 'oldimage',
+					[ 'oi_name', 'oi_archive_name' ],
+					[ 'oi_name' => array_keys( $pathsByName ) ],
+					__METHOD__
+				);
+
+				$checkPaths = [];
+				foreach ( $ores as $row ) {
+					if ( !strlen( $row->oi_archive_name ) ) {
+						continue; // broken row
+					}
+					$file = $repo->newFromArchiveName( $row->oi_name, $row->oi_archive_name );
+					$checkPaths[] = $file->getPath();
+				}
+
+				foreach ( array_chunk( $checkPaths, $batchSize ) as $paths ) {
+					$be->preloadFileStat( [ 'srcs' => $paths ] );
+					foreach ( $paths as $path ) {
+						if ( $be->fileExists( [ 'src' => $path ] ) === false ) {
+							$this->output( "$path\n" );
+						}
+					}
+				}
+			}
+		} while ( $res->numRows() >= $batchSize );
+	}
+}
+
+$maintClass = FindMissingFiles::class;
+require_once RUN_MAINTENANCE_IF_MAIN;