Download.php: references to non existing files now reported as missing file,...

Download.php: references to non existing files now reported as missing file, not 'wrong mimetype' anymore.

extension/qfq/qfq/Constants.php

@@ -248,6 +248,7 @@ const ERROR_DOWNLOAD_NO_FILES = 1701;
 const ERROR_DOWNLOAD_NOTHING_TO_DO = 1702;
 const ERROR_DOWNLOAD_UNEXPECTED_MIME_TYPE = 1703;
 const ERROR_DOWNLOAD_UNEXPECTED_NUMBER_OF_SOURCES = 1704;
+const ERROR_DOWNLOAD_FILE_NOT_READABLE = 1705;
 
 // KeyValueParser
 const ERROR_KVP_VALUE_HAS_NO_KEY = 1900;

extension/qfq/qfq/report/Download.php

@@ -97,6 +97,13 @@ class Download {
         // Remove empty entries. Might happen if there was no upload
         $files = OnArray::removeEmptyElementsFromArray($files);
 
+        // Check that all files exist and readable
+        foreach ($files AS $filename) {
+            if(!is_readable($filename)){
+                throw new downloadException("Error reading file $filename. Not found or no permission", ERROR_DOWNLOAD_FILE_NOT_READABLE);
+            }
+        }
+
         switch (count($files)) {
             case 0:
                 return '';