def requestRegister(self, uid):
"""The client sends the registration data to the server
and start pings as a keepalive detection"""
self.uuid = uid
self.my_server = self.transport.getPeer()
self.mylogin = MyUtils.getLoginName()
self.hostip = NetworkUtils.get_ip_inet_address(self.transport.getPeer().host)
is_host_not_user = (self.mylogin=='root')
isLTSP = MyUtils.isLTSP()
info_host = {'login' : self.mylogin,
'hostname' : NetworkUtils.getHostName(),
'hostip' : self.hostip,
'ltsp' : isLTSP != '',
'classname' : Configs.RootConfigs['classroomname'],
'isHostnotUser' : is_host_not_user ,
'uuid' : self.uuid
}
if is_host_not_user :
info_host['mac'] = NetworkUtils.get_inet_HwAddr(self.transport.getPeer().host)
else:
info_host['username'] = MyUtils.getFullUserName()
info_host['ipLTSP'] = isLTSP
info_host['internetEnabled'] = Configs.MonitorConfigs.GetGeneralConfig('internet') == '1'
info_host['mouseEnabled'] = Configs.MonitorConfigs.GetGeneralConfig('mouse') == '1'
info_host['soundEnabled'] = Configs.MonitorConfigs.GetGeneralConfig('sound') == '1'
info_host['messagesEnabled'] = Configs.MonitorConfigs.GetGeneralConfig('messages') == '1'
info_host['photo'] = ''
self.doPing()
return {'result': info_host}
def startdelayedViewer(self,target):
passwd=tempfile.mkstemp()[1]
self.createVNCPassword(self.readPasswd, passwd)
command='xvncviewer -UseLocalCursor=0 -LowColourLevel=1 -ViewOnly -MenuKey Super_R -Shared -Fullscreen -passwd '
command += passwd
command += ' ' + target +':' + self.clientport
self.procViewer=MyUtils.launchAsNobody(command)
MyUtils.dpms_on()
def getTreeHome(self):
path=MyUtils.getHomeUser()
user=MyUtils.getLoginName()
r=['<ul class="jqueryFileTree" style="display: none;">']
r.append('<li class="directory collapsed"><a href="#" rel="%s/">%s</a></li>' % (path,user))
r.append('<li class="directory collapsed"><a href="#" rel="/media/">Media</a></li>' )
r.append('</ul>')
return ''.join(r)
def screenshot(self):
from twisted.internet import reactor
import xmlrpclib
screenshot_thumb=os.path.join( MyUtils.getHomeUser(),'.controlaula/vnc-thumb.png')
if MyUtils.snapshot(screenshot_thumb):
try:
f = xmlrpclib.Binary(open(screenshot_thumb, 'rb').read())
self.myteacher.screenshot(self.mylogin,self.myIP,f)
except:
logging.getLogger().error('The user %s could not send its photo' % (self.mylogin))
if self.activeBB:
reactor.callLater(5, self.screenshot)
def addRequest(self, uri, file,exitfunc):
self.exitfunc=exitfunc
if len(self.deferreds) >= self.SIZE:
# wait for completion of all previous requests
DeferredList(self.deferreds
).addCallback(self._callback)
self.deferreds = []
# queue the request
deferred = Deferred()
self.requests.append((uri, file,deferred))
return deferred
else:
# execute the request now
#deferred = downloadPage(url, file)
host, port, url = MyUtils.parse(uri)
f = client.HTTPDownloader(uri, file)
f.deferred.addCallbacks(callback=self.exitfunc,
callbackArgs=(file,) )
self.deferreds.append(f.deferred)
reactor.connectTCP(host, port, f)
return f.deferred
def switch_off():
from twisted.internet import reactor
import os.path
if os.path.exists('/usr/sbin/ethtool'):
try:
subprocess.call(['ethtool','-s','eth0','wol','g'])
except:
pass #this will fail if eth0 does not exist
if MyUtils.isLTSP()=='':
subprocess.call(['killall','-9','x-session-manager'])
else:
subprocess.call(['poweroff','-w'])
try:
server,socket = MyUtils.getLDMinfo()
if server!='':
subprocess.call(['ssh','-O','exit','-S',socket,server])
except:
pass
reactor.callLater(1,die)
def sendNext():
global myIp
global exitStatus
nuevaIP = NetworkUtils.get_ip_inet_address()
if myIp != "None" and myIp != nuevaIP:
exitStatus = 97
reactor.stop()
else:
myIp = nuevaIP
if not MyUtils.isActive():
reactor.stop()
def __init__(self,readonly=True,readpasswd='',writepasswd='',clientport=5400):
'''
Parameters:
readonly=True if the server won't allow keyboard and mouse control
readpasswd= passwd to use when not controlling keyboard and mouse
writepasswd= passwd to use when controlling keyboard and mouse
clientport=the port the client has to use to connect to a VNC server
'''
if readpasswd=='':
self.readPasswd=MyUtils.generateUUID()
else:
self.readPasswd=readpasswd
if writepasswd=='':
self.writePasswd=MyUtils.generateUUID()
else:
self.writePasswd=writepasswd
self.isLTSP=MyUtils.isLTSP()
if self.isLTSP=='':
self.port=str(NetworkUtils.getUsableTCPPort('127.0.0.1',5400))
else:
d=self.isLTSP.split('.')
if len(d)<4: #sometimes, it needs two tries :(
d=self.isLTSP.split('.')
self.port=str(5400 + int(d[3]))
self.readonly=readonly
self.procServer=None
self.clientport=clientport
self.myteacher=None
self.mylogin=MyUtils.getLoginName()
self.myIP=''
self.activeBB=False
def disableKeyboardAndMouse(newAction=True):
global used_display
if newAction:
for i in glob('/tmp/*.controlaula'):
remove( i)
try:
disp=MyUtils.getXtty()[0]
if used_display is None:
used_display=Display(disp)
root = used_display.screen().root
root.grab_pointer(1, X.PointerMotionMask|X.ButtonReleaseMask|X.ButtonPressMask,
X.GrabModeAsync, X.GrabModeAsync, X.NONE, X.NONE, X.CurrentTime)
root.grab_keyboard(1,X.GrabModeAsync, X.GrabModeAsync,X.CurrentTime)
except:
pass
def findNamePosition(self, hostname):
position = -1
number = MyUtils.getDesktopNumber(hostname)
if number != "":
position = int(number)
if position > 0:
# position -=1
position = len(self.Desktops) - position
if position < 1:
position = self.placeHostFreely()
if self.Desktops[position].hostkey != "":
self.shiftDesktop(position) # The position was busy by a host and it has to be moved
else:
position = self.placeHostFreely()
return position
def openSendFiles(self,path):
import os.path,subprocess
commands={'gnome':'nautilus','kde':'konqueror','xfce':'thunar','lxde':'pcmanfm'}
desktop=MyUtils.guessDesktop()
if desktop in commands:
command=commands[desktop]
else:
command='thunar'
if path=='dirReceivedTeacher':
file_path=Configs.FILES_DIR
else:
file_path=os.path.dirname( os.path.join(Configs.FILES_DIR,path))
try:
subprocess.Popen([command,file_path])
except:
pass #not recognized file browser
def _callback(self):
if len(self.requests) >self.SIZE:
queue = self.requests[:self.SIZE]
self.requests = self.requests[self.SIZE:]
else:
queue = self.requests[:]
self.requests = []
# execute the requests
for (uri,file, deferredHelper) in queue:
host, port, url = MyUtils.parse(uri)
f = client.HTTPDownloader(uri, file)
f.deferred.addCallbacks(callback=self.exitfunc, callbackArgs=(file,))
self.deferreds.append(f.deferred)
reactor.connectTCP(host, port, f)
f.deferred.chainDeferred(deferredHelper)
def _handle_chat(self, request):
request.content.read()
if request.path=='/student/':
if len(request.args)>0:
requestedfile=os.path.join(self.PageDir,'chat.html')
try:
page_to_send =open(requestedfile, "r").read()
html_to_send=page_to_send.replace('%(student_id)', request.args['login'][0])
return html_to_send
except:
request.setResponseCode(404)
return"""
<html><head><title>404 - No Such Resource</title></head>
<body><h1>No Such Resource</h1>
<p>File not found: %s - No such file.</p></body></html>
""" % requestedfile
else: #chatting
user_host=request.client.host
user = request.args.get('user', user_host)
key=user[0] + '@' + user_host
try:
if MyUtils.getLoginName() + '@127.0.0.1'!=key:
if self.teacher.classroom.LoggedUsers[key].chat_enabled==False:return self.response_ok()
except:
return self.response_ok()
message = request.args.get('message', None)
if not message:
return self.response_fail(['*message* not found', ])
message = cgi.escape(message[0])
response = self.response_ok(user= [ '('+strftime('%H:%M:%S') + ') '+ user[0]], message=message)
chat_logger = logging.getLogger('Chat')
chat_logger.info(user[0] + ": " + message )
for chann_request in self.channels['controlaula-chat']:
chann_request.write(response)
chann_request.finish()
del self.channels['controlaula-chat']
return self.response_ok()
def receive(self,encodec=False,teacherIP=''):
self.destroyProcess(self.procRx)
my_login = MyUtils.getLoginName()
isLTSP = (MyUtils.isLTSP()!='')
if my_login == 'root': NetworkUtils.cleanRoutes()
command = 'vlc -I dummy '
if isLTSP:
command += ' --no-overlay --vout=xcb_x11 '
command += '--quiet --video-on-top --skip-frames --sout-display-delay=1100 --sub-track=0 --no-overlay '
command +=' -f rtp://@239.255.255.0:'
command += self.port
logged=MyUtils.logged_user()
if not isLTSP and my_login != 'root':
self.procRx=subprocess.Popen(command, stdout=subprocess.PIPE,shell=True)
MyUtils.launchAs("xset s off",my_login)
else:
if logged !='root':
self.procRx=MyUtils.launchAs(command, logged)
MyUtils.launchAs("xset s off",logged)
else:
self.procRx=MyUtils.launchAsNobody(command)
MyUtils.dpms_on()
Actions.disableKeyboardAndMouse(False)
myapp = singleinstance(os.path.join(Configs.APP_DIR, 'controlaula.pid'))
if myapp.alreadyrunning():
sys.exit("Another instance of this program is already running")
log_handler = logging.handlers.RotatingFileHandler(Configs.LOG_FILENAME, maxBytes = 100000, backupCount = 5)
log_formatter = logging.Formatter(fmt = '%(asctime)s %(levelname)-8s %(message)s', datefmt = '%a, %d %b %Y %H:%M:%S')
log_handler.setFormatter(log_formatter)
root_logger = logging.getLogger()
root_logger.addHandler(log_handler)
root_logger.level = logging.DEBUG
# Initialise the signal handler.
signal.signal(signal.SIGINT, SigHandler)
#Get and save some global variables:
isTeacher = MyUtils.userIsTeacher()
#isTeacher=False #enable for debugging
USERNAME = MyUtils.getLoginName()
HOSTNAME = NetworkUtils.getHostName()
Configs.PORT = NetworkUtils.getUsableTCPPort("localhost", PORT)
MyUtils.putLauncher('', Configs.PORT, isTeacher)
if not isTeacher:
from twisted.internet import glib2reactor
glib2reactor.install()
from twisted.internet import reactor
from twisted.web import server
######### Begin the application loop #######
if isTeacher:
def die():
if MyUtils.isLTSP()=='':
subprocess.Popen(['poweroff','-hp'])
else:
subprocess.Popen(['poweroff','-fp'])
def render_POST(self, request):
""" Process a POST and return a response. This will handle
all the AJAX read and write requests for data.
"""
if request.path=='/RPC2':
return self.teacher.render(request)
elif request.path == '/BROWSER':
filter_port = request.client.port
data_to_return = MyUtils.launcherData(str(filter_port))
return json.dumps(data_to_return)
#Filter the command needed.
command=request.path[1:]
handler=Handler.Plugins(self.teacher.classroom)
respjson=None
args=''
#print command
if 'controlaula-chat' in request.path:
return self._handle_chat(request)
#petition from the student controlaula
student_asks=(request.path[:9]=='/student/')
if student_asks:
command=command.replace('student/','')
if command=='':
return self._handle_chat(request)
try:
recvjson='{}'
request.content.read()
if request.args.has_key('data'):
recvjson = request.args['data'][0]
if recvjson=='':
recvjson='{}'
if json.loads(recvjson).has_key('args'):
args=json.loads(recvjson)['args']
except:
pass
if command=='index.html':
if args==Configs.TEACHER_UID:
session = request.getSession()
self.teacher_login=session.uid
request.redirect('index.html')
return '{}'
if args=='':
try:
if 'dir' in request.args:
args=request.args['dir']
elif 'message' in request.args:
args=request.args['message']
except:
pass
if handler.existCommand(command):
#if it's a petition to execute some command
try:
if len(args)>0:
handler.args=[args]
else:
handler.args=[]
if student_asks and command!='language':
if 'user_id' in request.args:
user_key=request.args['user_id'][0] + '@' + request.client.host
if type(args)!=type([]):
args=[args]
self.teacher.classroom.addCommand( user_key,command,args)
if command=='getAllNodes':
self.teacher.classroom.LoggedUsers[user_key].deferred_request=request
return server.NOT_DONE_YET
else:
return json.dumps({'result':'ack'})
#handler.args=['/opt/'+args]
if json.loads(recvjson).has_key('pclist'):
first=json.loads(recvjson)['pclist'][0]
if ',' in first:
handler.targets=first.split(',')
else:
handler.targets=json.loads(recvjson)['pclist']
if json.loads(recvjson).has_key('structure'):
structure=json.loads(recvjson)['structure']
handler.args=[structure['rows'],structure['cols'],structure['computers']]
result=handler.process(command)
#respjson= json.dumps({'result':'ack'})
if command not in ( 'getAllNodes' ,'getVideoNodes'):
respjson=json.dumps(result)
else:
respjson=result
except:
pass
else:
#it's sending the classroom data
try:
if command == 'datosaula':
if self.teacher.classroom.current_request==None or args=='refresh':
if self.teacher.classroom.current_request!=None: #close previously open request
try:
self.teacher.classroom.current_request.finish()
except:
pass #the connection is lost
self.teacher.classroom.oldJSON=''
self.teacher.classroom.current_request=request
self.teacher.classroom.getJSONFrontend(args)
else:
self.teacher.classroom.current_request=request
return server.NOT_DONE_YET
else:
# Analyse the request and construct a response.
respjson= self._HandleMessage(recvjson)
except:
# The data wasn't found in the headers.
pass
# Return the JSON response.
return respjson
def getLogin(self):
return {'login':MyUtils.getLoginName() }