diff -up tigervnc-1.0.90-20100721svn4113/vncviewer/UserDialog.cxx.102434 tigervnc-1.0.90-20100721svn4113/vncviewer/UserDialog.cxx
--- tigervnc-1.0.90-20100721svn4113/vncviewer/UserDialog.cxx.102434	2010-07-20 17:07:44.000000000 +0200
+++ tigervnc-1.0.90-20100721svn4113/vncviewer/UserDialog.cxx	2010-07-21 17:02:09.900085594 +0200
@@ -40,6 +40,8 @@
 #include "fltk_layout.h"
 #include "parameters.h"
 #include "UserDialog.h"
+#include <string>
+#include <iostream>
 
 using namespace rfb;
 
@@ -214,6 +216,15 @@ void CConn::getUserPasswd(char** user, c
     return;
   }
 
+  /* XXX Who wrote this code? Yes, it is really ugly */
+  if (passwdInput) {
+   std::string s;
+   std::cin >> s;
+   *password = strdup(s.c_str());
+   if (user) *user = 0;
+     return;
+  }
+
   if (!user) {
     fl_message_title(_("VNC authentication"));
     *password = strDup(fl_password(_("Password:"), ""));
diff -up tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.h.102434 tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.h
--- tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.h.102434	2009-03-23 17:49:47.000000000 +0100
+++ tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.h	2010-07-21 16:55:44.414314911 +0200
@@ -42,6 +42,7 @@ extern rfb::BoolParameter customCompress
 extern rfb::IntParameter compressLevel;
 extern rfb::BoolParameter noJpeg;
 extern rfb::IntParameter qualityLevel;
+extern rfb::BoolParameter passwdInput;
 
 extern char aboutText[];
 extern char* programName;
diff -up tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.cxx.102434 tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.cxx
--- tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.cxx.102434	2010-04-23 16:06:38.000000000 +0200
+++ tigervnc-1.0.90-20100721svn4113/vncviewer/parameters.cxx	2010-07-21 17:01:05.979161234 +0200
@@ -59,6 +59,7 @@ IntParameter wmDecorationHeight("WMDecor
 StringParameter passwordFile("PasswordFile",
                              "Password file for VNC authentication", "");
 AliasParameter passwd("passwd", "Alias for PasswordFile", &passwordFile);
+BoolParameter passwdInput("passwdInput", "Gets password from stdin", false);
 
 BoolParameter autoSelect("AutoSelect",
                          "Auto select pixel format and encoding. "
diff -up tigervnc-1.0.90-20100721svn4113/vncviewer/vncviewer.man.102434 tigervnc-1.0.90-20100721svn4113/vncviewer/vncviewer.man
--- tigervnc-1.0.90-20100721svn4113/vncviewer/vncviewer.man.102434	2009-10-07 17:13:00.000000000 +0200
+++ tigervnc-1.0.90-20100721svn4113/vncviewer/vncviewer.man	2010-07-21 16:55:44.414314911 +0200
@@ -119,6 +119,11 @@ the server, you can specify it here to a
 "~/.vnc/passwd".
 
 .TP
+.B \-passwdInput \fItrue, false\fP
+Force standard vnc dialog to getting password and reads password from stdin.
+Default is false(shows dialog window)
+
+.TP
 .B \-Shared
 When you make a connection to a VNC server, all other existing connections are
 normally closed.  This option requests that they be left open, allowing you to