Merge pull request #652 from prey/fix-file-retrieval-when-directory-i…

…s-empty

validation when directory is empty

lib/agent/providers/files/index.js

@@ -9,12 +9,11 @@
 
 var fs       = require('fs'),
     path     = require('path'),
-    mime     = require('mime'),
     execSync = require("child_process").execSync;
 
 var common      = require('./../../common'),
     system      = common.system,
-    logger      = common.logger,
+    logger      = common.logger.prefix('files'),
     node_bin    = path.join(system.paths.current, 'bin', 'node'),
     run_as_user = common.system.run_as_user,
     finder      = require('./finder'),
@@ -77,7 +76,7 @@ var get_list = function(options, callback) {
     matches = [];
 
   if (!path)
-    return cb(new Error('Cannot find files without a path.'));
+    return callback(new Error('Cannot find files without a path.'));
 
   fs.exists(path, function(exists) {
     if (!exists)
@@ -151,6 +150,11 @@ module.exports.get_tree = function(options, cb) {
       return cb(new Error('Unable to parse files data'));
     }
 
+    if (files.length == 0) {
+      logger.info("without files in folder!");
+      return cb(null, "[]");
+    }
+
     files.forEach((file, index) => {
       var done = (isHidden) => {
         file.hidden = isHidden;