#!/usr/bin/python
#
# Copyright (c) 2014 Sylvain Peyrefitte
#
# This file is part of rdpy.
#
# rdpy is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
"""
example of use rdpy as rdp client
"""

import sys, os, getopt

from PyQt4 import QtGui, QtCore
from rdpy.ui.qt4 import RDPClientQt
from rdpy.protocol.rdp import rdp

import rdpy.base.log as log
log._LOG_LEVEL = log.Level.INFO

class RDPClientQtFactory(rdp.ClientFactory):
    """
    @summary: Factory create a RDP GUI client
    """
    def __init__(self, width, height, username, password, domain, fullscreen, keyboardLayout, optimized):
        """
        @param width: width of client
        @param heigth: heigth of client
        @param username: username present to the server
        @param password: password present to the server
        @param domain: microsoft domain
        @param fullscreen: show widget in fullscreen mode
        @param keyboardLayout: keyboard layout
        @param optimized: enable optimized session orders
        """
        self._width = width
        self._height = height
        self._username = username
        self._passwod = password
        self._domain = domain
        self._fullscreen = fullscreen
        self._keyboardLayout = keyboardLayout
        self._optimized = optimized
        self._w = None
        
    def buildObserver(self, controller, addr):
        """
        @summary:  Build RFB observer
                    We use a RDPClientQt as RDP observer
        @param controller: build factory and needed by observer
        @param addr: destination address
        @return: RDPClientQt
        """
        #create client observer
        client = RDPClientQt(controller, self._width, self._height)
        #create qt widget
        self._w = client.getWidget()
        self._w.setWindowTitle('rdpy-rdpclient')
        if self._fullscreen:
            self._w.showFullScreen()
        else:
            self._w.show()
        
        controller.setUsername(self._username)
        controller.setPassword(self._passwod)
        controller.setDomain(self._domain)
        controller.setKeyboardLayout(self._keyboardLayout)
        if self._optimized:
            controller.setPerformanceSession()
        
        return client
        
    def startedConnecting(self, connector):
        pass
    
    def clientConnectionLost(self, connector, reason):
        """
        @summary: Connection lost event
        @param connector: twisted connector use for rdp connection (use reconnect to restart connection)
        @param reason: str use to advertise reason of lost connection
        """
        QtGui.QMessageBox.warning(self._w, "Warning", "Lost connection : %s"%reason)
        reactor.stop()
        app.exit()
        
    def clientConnectionFailed(self, connector, reason):
        """
        @summary: Connection failed event
        @param connector: twisted connector use for rdp connection (use reconnect to restart connection)
        @param reason: str use to advertise reason of lost connection
        """
        QtGui.QMessageBox.warning(self._w, "Warning", "Connection failed : %s"%reason)
        reactor.stop()
        app.exit()
        
def autoDetectKeyboardLayout():
    """
    @summary: try to auto detect keyboard layout
    """
    try:
        if os.name == 'posix':    
            from subprocess import check_output
            result = check_output(["setxkbmap", "-print"])
            if "azerty" in result:
                return "fr"
        elif os.name == 'nt':
            import win32api, win32con, win32process
            import ctypes.windll.user32 as user32
            w = user32.GetForegroundWindow() 
            tid = user32.GetWindowThreadProcessId(w, 0) 
            result = user32.GetKeyboardLayout(tid)
            if result == 0x409409:
                return "fr"
    except:
        log.info("failed to auto detect keyboard layout")
        pass
    return "en"
        
def help():
    print "Usage: rdpy-rdpclient [options] ip[:port]"
    print "\t-u: user name"
    print "\t-p: password"
    print "\t-d: domain"
    print "\t-w: width of screen [default : 1024]"
    print "\t-l: height of screen [default : 800]"
    print "\t-f: enable full screen mode [default : False]"
    print "\t-k: keyboard layout [en|fr] [default : en]"
    print "\t-o: optimized session (disable costly effect) [default : False]"
        
if __name__ == '__main__':
    
    #default script argument
    username = ""
    password = ""
    domain = ""
    width = 1024
    height = 800
    fullscreen = False
    optimized = False
    keyboardLayout = autoDetectKeyboardLayout()
    
    try:
        opts, args = getopt.getopt(sys.argv[1:], "hfou:p:d:w:l:k:")
    except getopt.GetoptError:
        help()
    for opt, arg in opts:
        if opt == "-h":
            help()
            sys.exit()
        elif opt == "-u":
            username = arg
        elif opt == "-p":
            password = arg
        elif opt == "-d":
            domain = arg
        elif opt == "-w":
            width = int(arg)
        elif opt == "-l":
            height = int(arg)
        elif opt == "-f":
            fullscreen = True
        elif opt == "-o":
            optimized = True
        elif opt == "-k":
            keyboardLayout = arg
            
    if ':' in args[0]:
        ip, port = args[0].split(':')
    else:
        ip, port = args[0], "3389"
    
    #create application
    app = QtGui.QApplication(sys.argv)
    
    #add qt4 reactor
    import qt4reactor
    qt4reactor.install()
    
    if fullscreen:
        width = QtGui.QDesktopWidget().screenGeometry().width()
        height = QtGui.QDesktopWidget().screenGeometry().height()
    
    
        
    
    log.info("keyboard layout set to %s"%keyboardLayout)
    
    from twisted.internet import reactor
    reactor.connectTCP(ip, int(port), RDPClientQtFactory(width, height, username, password, domain, fullscreen, keyboardLayout, optimized))
    reactor.runReturn()
    app.exec_()