Fixed Non-ASCII attachment filename will crash when downloading.

Thanks to xet7 !

Fixes #2759

packages/wekan-cfs-base-package/base-server.js

@@ -0,0 +1,95 @@
+/**
+ * @method FS.Utility.binaryToBuffer
+ * @public
+ * @param {Uint8Array} data
+ * @returns {Buffer}
+ *
+ * Converts a Uint8Array instance to a Node Buffer instance
+ */
+FS.Utility.binaryToBuffer = function(data) {
+  var len = data.length;
+  var buffer = new Buffer(len);
+  for (var i = 0; i < len; i++) {
+    buffer[i] = data[i];
+  }
+  return buffer;
+};
+
+/**
+ * @method FS.Utility.bufferToBinary
+ * @public
+ * @param {Buffer} data
+ * @returns {Uint8Array}
+ *
+ * Converts a Node Buffer instance to a Uint8Array instance
+ */
+FS.Utility.bufferToBinary = function(data) {
+  var len = data.length;
+  var binary = EJSON.newBinary(len);
+  for (var i = 0; i < len; i++) {
+    binary[i] = data[i];
+  }
+  return binary;
+};
+
+/**
+ * @method FS.Utility.safeCallback
+ * @public
+ * @param {Function} callback
+ * @returns {Function}
+ *
+ * Makes a callback safe for Meteor code
+ */
+FS.Utility.safeCallback = function (callback) {
+  return Meteor.bindEnvironment(callback, function(err) { throw err; });
+};
+
+/**
+ * @method FS.Utility.safeStream
+ * @public
+ * @param {Stream} nodestream
+ * @returns {Stream}
+ *
+ * Adds `safeOn` and `safeOnce` methods to a NodeJS Stream
+ * object. These are the same as `on` and `once`, except
+ * that the callback is wrapped for use in Meteor.
+ */
+FS.Utility.safeStream = function(nodestream) {
+  if (!nodestream || typeof nodestream.on !== 'function')
+    throw new Error('FS.Utility.safeStream requires a NodeJS Stream');
+
+  // Create Meteor safe events
+  nodestream.safeOn = function(name, callback) {
+    return nodestream.on(name, FS.Utility.safeCallback(callback));
+  };
+
+  // Create Meteor safe events
+  nodestream.safeOnce = function(name, callback) {
+    return nodestream.once(name, FS.Utility.safeCallback(callback));
+  };
+
+  // Return the modified stream - modified anyway
+  return nodestream;
+};
+
+/**
+ * @method FS.Utility.eachFileFromPath
+ * @public
+ * @param {String} p - Server path
+ * @param {Function} f - Function to run for each file found in the path.
+ * @returns {undefined}
+ *
+ * Utility for iteration over files from path on server
+ */
+FS.Utility.eachFileFromPath = function(p, f) {
+  var fs = Npm.require('fs');
+  var path = Npm.require('path');
+  var files = fs.readdirSync(p);
+  files.map(function (file) {
+    return path.join(p, file);
+  }).filter(function (filePath) {
+    return fs.statSync(filePath).isFile() && path.basename(filePath)[0] !== '.';
+  }).forEach(function (filePath) {
+    f(filePath);
+  });
+};