add proxy support

README.md

@@ -26,6 +26,22 @@ var Ftp = new JSFtp({
 });
 ```
 
+Through a proxy:
+
+```javascript
+var Ftp = new JSFtp({
+    host: proxy.host,
+    port: ftp.port,
+    user: `${ftp.user}@${ftp.host} ${proxy.user}`,
+    pass: ftp.pass,
+    cwd: '/82844',
+    root: '/82844',
+    debugMode: true,
+    acct: proxy.pass
+})
+```
+
+
 jsftp gives you access to all the raw commands of the FTP protocol in form of
 methods in the `Ftp` object. It also provides several convenience methods for
 actions that require complex chains of commands (e.g. uploading and retrieving

lib/jsftp.js

@@ -76,6 +76,7 @@ var Ftp = module.exports = function(cfg) {
   this.port = cfg.port || FTP_PORT;
   this.user = cfg.user || 'anonymous';
   this.pass = cfg.pass || '@anonymous';
+  this.acct = cfg.acct || ''
   // True if the server doesn't support the `stat` command. Since listing a
   // directory or retrieving file properties is quite a common operation, it is
   // more efficient to avoid the round-trip to the server.
@@ -234,7 +235,7 @@ Ftp.prototype.runCommand = function(action, callback) {
 
   var self = this;
   this.getFeatures(function() {
-    self.auth(self.user, self.pass, function() {
+    self.auth(self.user, self.pass, self.acct, function() {
       self.commandQueue.push(cmd);
       self.nextCmd();
     });
@@ -316,9 +317,8 @@ Ftp.prototype.getFeatures = function(callback) {
  * @param {String} pass Password
  * @param {Function} callback Follow-up function.
  */
-Ftp.prototype.auth = function(user, pass, callback) {
+Ftp.prototype.auth = function(user, pass, acct, callback) {
   var self = this;
-
   if (this.authenticating === true) {
     return callback(new Error('This client is already authenticating'));
   }
@@ -329,6 +329,9 @@ Ftp.prototype.auth = function(user, pass, callback) {
   if (!pass) {
     pass = '@anonymous';
   }
+  if (!acct) {
+    acct = ''
+  }
 
   this.authenticating = true;
   self.raw('user', user, function(err, res) {
@@ -338,19 +341,23 @@ Ftp.prototype.auth = function(user, pass, callback) {
       return;
     }
     self.raw('pass', pass, function(err, res) {
-      self.authenticating = false;
-
       if (err) {
+        self.authenticating = false;
         callback(err);
       } else if ([230, 202].indexOf(res.code) > -1) {
+        self.authenticating = false;
         self.authenticated = true;
         self.user = user;
         self.pass = pass;
         self.raw('type', 'I', function() {
           callback(undefined, res);
         });
       } else if (res.code === 332) {
-        self.raw('acct', ''); // ACCT not really supported
+        self.raw('acct', acct, function (err, res) {
+          self.authenticating = false;
+          self.authenticated = true;
+          callback(undefined, res)
+        }); // ACCT not really supported
       }
     });
   });

test/jsftp_test.js

@@ -78,6 +78,7 @@ describe('jsftp test suite', function() {
     ftp.auth(
       options.user,
       options.pass + '_invalid',
+      null,
       function(err, data) {
         assert.equal(err.code, 530);
         assert.equal(data, null);
@@ -554,7 +555,7 @@ describe('jsftp test suite', function() {
 
   it('test attach event handlers: connect', function(_next) {
     var clientOnConnect = function() {
-      client.auth(options.user, options.pass, next);
+      client.auth(options.user, options.pass, null, next);
     };
 
     var next = function(err) {