Fixed Non-ASCII attachment filename will crash when downloading.

Thanks to xet7 !

Fixes #2759

packages/wekan-cfs-data-man/server/data-man-api.js

@@ -0,0 +1,176 @@
+/* global DataMan:true, Buffer */
+
+var fs = Npm.require("fs");
+var Readable = Npm.require('stream').Readable;
+
+/**
+ * @method DataMan
+ * @public
+ * @constructor
+ * @param {Buffer|ArrayBuffer|Uint8Array|String} data The data that you want to manipulate.
+ * @param {String} [type] The data content (MIME) type, if known. Required if the first argument is a Buffer, ArrayBuffer, Uint8Array, or URL
+ * @param {Object} [options] Currently used only to pass options for the GET request when `data` is a URL.
+ */
+DataMan = function DataMan(data, type, options) {
+  var self = this, buffer;
+
+  if (!data) {
+    throw new Error("DataMan constructor requires a data argument");
+  }
+
+  // The end result of all this is that we will have this.source set to a correct
+  // data type handler. We are simply detecting what the data arg is.
+  //
+  // Unless we already have in-memory data, we don't load anything into memory
+  // and instead rely on obtaining a read stream when the time comes.
+  if (typeof Buffer !== "undefined" && data instanceof Buffer) {
+    if (!type) {
+      throw new Error("DataMan constructor requires a type argument when passed a Buffer");
+    }
+    self.source = new DataMan.Buffer(data, type);
+  } else if (typeof ArrayBuffer !== "undefined" && data instanceof ArrayBuffer) {
+    if (typeof Buffer === "undefined") {
+      throw new Error("Buffer support required to handle an ArrayBuffer");
+    }
+    if (!type) {
+      throw new Error("DataMan constructor requires a type argument when passed an ArrayBuffer");
+    }
+    buffer = new Buffer(new Uint8Array(data));
+    self.source = new DataMan.Buffer(buffer, type);
+  } else if (EJSON.isBinary(data)) {
+    if (typeof Buffer === "undefined") {
+      throw new Error("Buffer support required to handle an ArrayBuffer");
+    }
+    if (!type) {
+      throw new Error("DataMan constructor requires a type argument when passed a Uint8Array");
+    }
+    buffer = new Buffer(data);
+    self.source = new DataMan.Buffer(buffer, type);
+  } else if (typeof Readable !== "undefined" && data instanceof Readable) {
+    if (!type) {
+      throw new Error("DataMan constructor requires a type argument when passed a stream.Readable");
+    }
+    self.source = new DataMan.ReadStream(data, type);
+  } else if (typeof data === "string") {
+    if (data.slice(0, 5) === "data:") {
+      self.source = new DataMan.DataURI(data);
+    } else if (data.slice(0, 5) === "http:" || data.slice(0, 6) === "https:") {
+      if (!type) {
+        throw new Error("DataMan constructor requires a type argument when passed a URL");
+      }
+      self.source = new DataMan.URL(data, type, options);
+    } else {
+      // assume it's a filepath
+      self.source = new DataMan.FilePath(data, type);
+    }
+  } else {
+    throw new Error("DataMan constructor received data that it doesn't support");
+  }
+};
+
+/**
+ * @method DataMan.prototype.getBuffer
+ * @public
+ * @param {function} [callback] callback(err, buffer)
+ * @returns {Buffer|undefined}
+ *
+ * Returns a Buffer representing this data, or passes the Buffer to a callback.
+ */
+DataMan.prototype.getBuffer = function dataManGetBuffer(callback) {
+  var self = this;
+  return callback ? self.source.getBuffer(callback) : Meteor.wrapAsync(bind(self.source.getBuffer, self.source))();
+};
+
+function _saveToFile(readStream, filePath, callback) {
+  var writeStream = fs.createWriteStream(filePath);
+  writeStream.on('close', Meteor.bindEnvironment(function () {
+    callback();
+  }, function (error) { callback(error); }));
+  writeStream.on('error', Meteor.bindEnvironment(function (error) {
+    callback(error);
+  }, function (error) { callback(error); }));
+  readStream.pipe(writeStream);
+}
+
+/**
+ * @method DataMan.prototype.saveToFile
+ * @public
+ * @param {String} filePath
+ * @param {Function} callback
+ * @returns {undefined}
+ *
+ * Saves this data to a filepath on the local filesystem.
+ */
+DataMan.prototype.saveToFile = function dataManSaveToFile(filePath, callback) {
+  var readStream = this.createReadStream();
+  return callback ? _saveToFile(readStream, filePath, callback) : Meteor.wrapAsync(_saveToFile)(readStream, filePath);
+};
+
+/**
+ * @method DataMan.prototype.getDataUri
+ * @public
+ * @param {function} [callback] callback(err, dataUri)
+ *
+ * If no callback, returns the data URI.
+ */
+DataMan.prototype.getDataUri = function dataManGetDataUri(callback) {
+  var self = this;
+  return callback ? self.source.getDataUri(callback) : Meteor.wrapAsync(bind(self.source.getDataUri, self.source))();
+};
+
+/**
+ * @method DataMan.prototype.createReadStream
+ * @public
+ *
+ * Returns a read stream for the data.
+ */
+DataMan.prototype.createReadStream = function dataManCreateReadStream() {
+  return this.source.createReadStream();
+};
+
+/**
+ * @method DataMan.prototype.size
+ * @public
+ * @param {function} [callback] callback(err, size)
+ *
+ * If no callback, returns the size in bytes of the data.
+ */
+DataMan.prototype.size = function dataManSize(callback) {
+  var self = this;
+  return callback ? self.source.size(callback) : Meteor.wrapAsync(bind(self.source.size, self.source))();
+};
+
+/**
+ * @method DataMan.prototype.type
+ * @public
+ *
+ * Returns the type of the data.
+ */
+DataMan.prototype.type = function dataManType() {
+  return this.source.type();
+};
+
+/*
+ * "bind" shim; from underscorejs, but we avoid a dependency
+ */
+var slice = Array.prototype.slice;
+var nativeBind = Function.prototype.bind;
+var ctor = function(){};
+function isFunction(obj) {
+  return Object.prototype.toString.call(obj) == '[object Function]';
+}
+function bind(func, context) {
+  var args, bound;
+  if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1));
+  if (!isFunction(func)) throw new TypeError;
+  args = slice.call(arguments, 2);
+  return bound = function() {
+    if (!(this instanceof bound)) return func.apply(context, args.concat(slice.call(arguments)));
+    ctor.prototype = func.prototype;
+    var self = new ctor;
+    ctor.prototype = null;
+    var result = func.apply(self, args.concat(slice.call(arguments)));
+    if (Object(result) === result) return result;
+    return self;
+  };
+}