From 25e8ac1c2f51e7f3f35eaec013aa1b3f8356f17b Mon Sep 17 00:00:00 2001
From: Georg Ehrke <georg@ownCloud.com>
Date: Mon, 10 Jun 2013 11:01:12 +0200
Subject: [PATCH] implement previews for single shared files

---
 lib/preview.php | 41 +++++++++++++++++++++++++----------------
 1 file changed, 25 insertions(+), 16 deletions(-)

diff --git a/lib/preview.php b/lib/preview.php
index f9f1288cb9..904689bc4e 100755
--- a/lib/preview.php
+++ b/lib/preview.php
@@ -557,31 +557,40 @@ class Preview {
 		if(array_key_exists('y', $_GET)) $maxY = (int) $_GET['y'];
 		if(array_key_exists('scalingup', $_GET)) $scalingup = (bool) $_GET['scalingup'];
 		if(array_key_exists('t', $_GET)) $token = (string) $_GET['t'];
-		
+
 		$linkItem = \OCP\Share::getShareByToken($token);
-		
+
 		if (is_array($linkItem) && isset($linkItem['uid_owner']) && isset($linkItem['file_source'])) {
 			$userid = $linkItem['uid_owner'];
 			\OC_Util::setupFS($userid);
+
 			$pathid = $linkItem['file_source'];
 			$path = \OC\Files\Filesystem::getPath($pathid);
-		}
-		
-		//clean up file parameter
-		$file = \OC\Files\Filesystem::normalizePath($file);
-		if(!\OC\Files\Filesystem::isValidPath($file)) {
-			\OC_Response::setStatus(403);
-			exit;
+			$pathinfo = \OC\Files\Filesystem::getFileInfo($path);
+
+			$sharedfile = null;
+			if($linkItem['item_type'] === 'folder') {
+				//clean up file parameter
+				$sharedfile = \OC\Files\Filesystem::normalizePath($file);
+				if(!\OC\Files\Filesystem::isValidPath($file)) {
+					\OC_Response::setStatus(403);
+					exit;
+				}
+			} else if($linkItem['item_type'] === 'file') {
+				$parent = $pathinfo['parent'];
+				$path = \OC\Files\Filesystem::getPath($parent);
+				$sharedfile = $pathinfo['name'];
+			}
+
+			$path = \OC\Files\Filesystem::normalizePath($path, false);
+			if(substr($path, 0, 1) == '/') {
+				$path = substr($path, 1);
+			}
 		}
 
-		$path = \OC\Files\Filesystem::normalizePath($path, false);
-		if(substr($path, 0, 1) == '/') {
-			$path = substr($path, 1);
-		}
-
-		if($userid !== null && $path !== null) {
+		if($userid !== null && $path !== null && $sharedfile !== null) {
 			try{
-				$preview = new Preview($userid, 'files/' . $path, $file, $maxX, $maxY, $scalingup);
+				$preview = new Preview($userid, 'files/' . $path, $sharedfile, $maxX, $maxY, $scalingup);
 				$preview->showPreview();
 			}catch(\Exception $e) {
 				\OC_Response::setStatus(404);