/** Function to sanitize the upload file name when the file name is detected to have bad extensions
* @param String -- $fileName - File name to be sanitized
* @return String - Sanitized file name
*/
function sanitizeUploadFileName($fileName, $badFileExtensions)
{
$fileName = Vtiger_Functions::slug($fileName);
$fileName = rtrim($fileName, '\\/<>?*:"<>|');
$fileNameParts = explode(".", $fileName);
$countOfFileNameParts = count($fileNameParts);
$badExtensionFound = false;
for ($i = 0; $i < $countOfFileNameParts; ++$i) {
$partOfFileName = $fileNameParts[$i];
if (in_array(strtolower($partOfFileName), $badFileExtensions)) {
$badExtensionFound = true;
$fileNameParts[$i] = $partOfFileName . 'file';
}
}
$newFileName = implode(".", $fileNameParts);
if ($badExtensionFound) {
$newFileName .= ".txt";
}
return $newFileName;
}
