From 2d1d7f644bb50983381590765cb03b1bececcbb0 Mon Sep 17 00:00:00 2001
From: Aaron Schulz <aaron@users.mediawiki.org>
Date: Sun, 22 Jan 2012 00:06:18 +0000
Subject: [PATCH] * Fixed bugs in SwiftFileBackend file listing code * Clear
 container cache in SwiftFileBackend when clearCache() is called * Updated a
 comment and fixed a comment typo

---
 includes/filerepo/FileRepo.php                 |  2 +-
 includes/filerepo/backend/FileBackend.php      |  2 +-
 includes/filerepo/backend/SwiftFileBackend.php | 16 ++++++++++++++--
 3 files changed, 16 insertions(+), 4 deletions(-)

diff --git a/includes/filerepo/FileRepo.php b/includes/filerepo/FileRepo.php
index 7e92b4db12..e7608ca4f2 100644
--- a/includes/filerepo/FileRepo.php
+++ b/includes/filerepo/FileRepo.php
@@ -1084,7 +1084,7 @@ class FileRepo {
 				'dst'           => $archivePath,
 				// We may have 2+ identical files being deleted,
 				// all of which will map to the same destination file
-				'overwriteSame' => true
+				'overwriteSame' => true // also see bug 31792
 			);
 		}
 
diff --git a/includes/filerepo/backend/FileBackend.php b/includes/filerepo/backend/FileBackend.php
index 97ab13d3ac..0e07923485 100644
--- a/includes/filerepo/backend/FileBackend.php
+++ b/includes/filerepo/backend/FileBackend.php
@@ -1300,7 +1300,7 @@ abstract class FileBackend extends FileBackendBase {
 		// This accounts for Swift and S3 restrictions while leaving room 
 		// for things like '.xxx' (hex shard chars) or '.seg' (segments).
 		// Note that matching strings URL encode to the same string;
-		// in Swift, the length resriction is *after* URL encoding.
+		// in Swift, the length restriction is *after* URL encoding.
 		return preg_match( '/^[a-z0-9][a-z0-9-_]{0,199}$/i', $container );
 	}
 
diff --git a/includes/filerepo/backend/SwiftFileBackend.php b/includes/filerepo/backend/SwiftFileBackend.php
index 29c0fa8c62..9c9a551442 100644
--- a/includes/filerepo/backend/SwiftFileBackend.php
+++ b/includes/filerepo/backend/SwiftFileBackend.php
@@ -508,7 +508,8 @@ class SwiftFileBackend extends FileBackend {
 
 		try {
 			$container = $this->getContainer( $fullCont );
-			$files = $container->list_objects( $limit, $after, "{$dir}/" );
+			$prefix = ( $dir == '' ) ? null : "{$dir}/";
+			$files = $container->list_objects( $limit, $after, $prefix );
 		} catch ( NoSuchContainerException $e ) {
 		} catch ( NoSuchObjectException $e ) {
 		} catch ( InvalidResponseException $e ) {
@@ -685,6 +686,13 @@ class SwiftFileBackend extends FileBackend {
 		return $this->conn;
 	}
 
+	/**
+	 * @see FileBackend::doClearCache()
+	 */
+	protected function doClearCache( array $paths = null ) {
+		$this->connContainers = array(); // clear container object cache
+	}
+
 	/**
 	 * Get a Swift container object, possibly from process cache.
 	 * Use $reCache if the file count or byte count is needed.
@@ -784,7 +792,11 @@ class SwiftFileBackendFileList implements Iterator {
 		if ( substr( $this->dir, -1 ) === '/' ) {
 			$this->dir = substr( $this->dir, 0, -1 ); // remove trailing slash
 		}
-		$this->suffixStart = strlen( $dir ) + 1; // size of "path/to/dir/"
+		if ( $this->dir == '' ) { // whole container
+			$this->suffixStart = 0;
+		} else { // dir within container
+			$this->suffixStart = strlen( $dir ) + 1; // size of "path/to/dir/"
+		}
 	}
 
 	public function current() {
-- 
2.20.1