From fcf26436095fe8a6b3ba83f4263a6b7036ba5cf7 Mon Sep 17 00:00:00 2001
From: Mark Baker <mark@lange.demon.co.uk>
Date: Fri, 26 Nov 2010 00:36:01 +0000
Subject: [PATCH] Additional validation check in the canLoad() method of
 Excel2007 Reader to return false for OpenXML documents that aren't workbooks
 (eg. pptx, docx)

git-svn-id: https://phpexcel.svn.codeplex.com/svn/trunk@64373 2327b42d-5241-43d6-9e2a-de5ac946f064
---
 Classes/PHPExcel/Reader/Excel2007.php | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/Classes/PHPExcel/Reader/Excel2007.php b/Classes/PHPExcel/Reader/Excel2007.php
index 10efeaa7..187966b7 100644
--- a/Classes/PHPExcel/Reader/Excel2007.php
+++ b/Classes/PHPExcel/Reader/Excel2007.php
@@ -168,18 +168,26 @@ class PHPExcel_Reader_Excel2007 implements PHPExcel_Reader_IReader
 			throw new Exception("Could not open " . $pFilename . " for reading! File does not exist.");
 		}
 
+		$xl = false;
 		// Load file
 		$zip = new ZipArchive;
 		if ($zip->open($pFilename) === true) {
 			// check if it is an OOXML archive
 			$rels = simplexml_load_string($this->_getFromZipArchive($zip, "_rels/.rels"));
+			foreach ($rels->Relationship as $rel) {
+				switch ($rel["Type"]) {
+					case "http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument":
+						if (basename($rel["Target"]) == 'workbook.xml') {
+							$xl = true;
+						}
+						break;
 
+				}
+			}
 			$zip->close();
-
-			return ($rels !== false);
 		}
 
-		return false;
+		return $xl;
 	}
 
 	private function _castToBool($c) {