/usr/lib/python2.7/dist-packages/ControlAula/StudentLoop.py is in controlaula 1.8.0-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 | ##############################################################################
# -*- coding: utf-8 -*-
# Project: Controlaula
# Module: StudentLoop.py
# Purpose: Class listen to the teacher and execute his orders
# Language: Python 2.5
# Date: 22-Jan-2010.
# Ver: 1-Nov-2010.
# Author: José L. Redrejo Rodríguez
# Copyright: 2009-2010 - José L. Redrejo Rodríguez <jredrejo @nospam@ debian.org>
#
# ControlAula 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.
# ControlAula 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 ControlAula. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
import xmlrpclib
from ControlAula.Utils import NetworkUtils, MyUtils,Configs,ping
from ControlAula.Plugins import StudentHandler,Actions,VNC, Broadcast
from ControlAula import ScanTeachers
import logging
import datetime
import os
import simplejson as json
from twisted.internet import reactor
from twisted import version
from twisted.web import resource, static, server
from twisted.internet.protocol import ReconnectingClientFactory
from ClassProtocol import ControlProtocol
class ControlAulaProtocol(resource.Resource):
"""Respond with the appropriate ControlAUla protocol response.
A GET should return a file. A POST should use JSON to retrieve and send data
"""
isLeaf = True # This is a resource end point.
def render_GET(self, request):
pagename = request.path[1:].lower()
# Check if requested file exists.
if request.path[:13]=='/loginimages/' or request.path[:10]=='/sendfile/':
requestedfile=os.path.join(Configs.APP_DIR ,request.path[1:])
else:
requestedfile = os.path.join(self.PageDir,request.path[1:])
if '/controlaula/' in request.path:
pagename = request.path[13:]
if "-" in pagename:
request.path = request.path[12:]
requestedfile = os.path.join(Configs.APP_DIR,'controlaula.html')
else:
requestedfile = os.path.join(Configs.APP_DIR,pagename)
if not os.path.isfile(requestedfile):
# Didn't find it? Return an error.
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
f=static.File(requestedfile)
if f.type is None:
f.type, f.encoding = static.getTypeAndEncoding(requestedfile,
f.contentTypes,
f.contentEncodings,
f.defaultType)
if f.type:
ctype=f.type.split(":")[0]
# Send the headers.
request.setHeader('content-type', ctype)
if f.encoding:
request.setHeader('content-encoding', f.encoding)
# Send the page.
if version.major >= 9:
static.NoRangeStaticProducer(request,f.openForReading()).start()
else:
static.FileTransfer(f.openForReading(), f.getFileSize(), request)
return server.NOT_DONE_YET
def render_POST(self, request):
if request.path == '/BROWSER':
data_to_return = MyUtils.launcherData()
return json.dumps(data_to_return)
else:
return {}
class ControlFactory(ReconnectingClientFactory):
protocol = ControlProtocol
def buildProtocol(self, address):
self.resetDelay()
proto = ReconnectingClientFactory.buildProtocol(self, address)
return proto
class Obey(object):
'''
What the student must do :D
'''
def __init__(self, interval):
'''
Constructor
'''
self.Teachers={}
self.interval=interval
self.mylogin=MyUtils.getLoginName()
self.myFullName=MyUtils.getFullUserName()
self.myHostname=NetworkUtils.getHostName()
self.myHome=MyUtils.getHomeUser()
self.myteacher=None
self.catched=''
self.myMAC=''
self.handler=StudentHandler.Plugins(None,None)
self.myVNC=None
self.broadcast=None
self.isLTSP=MyUtils.isLTSP()
self.monitor=None
self.myIp=None
self.last_ping=datetime.datetime.now()
self.last_logged=self.last_ping
self.last_teacher=self.last_ping
def startScan(self):
try:
self.monitor = ScanTeachers.AvahiMonitor()
self.monitor.add_callback('new-service', self._add_teacher)
self.monitor.add_callback('remove-service', self._remove_teacher)
self.monitor.start()
except Exception, ex:
logging.getLogger().error("Couldn't initialize Avahi monitor: %s" % str(ex))
#sys.exit()
def _add_teacher(self, func, name, address, port,data={}):
#discard ipv6 entries
if address.find(":") == -1:
if MyUtils.isLTSPServer() and NetworkUtils.ltspGW()!=str(address): return
if not self.Teachers.has_key(name):
logging.getLogger().debug('New teacher detected: ' + name)
self.Teachers[name]=(data['ipINET'],port)
if self.checkClass(data):
self.newTeacher(name)
else:
logging.getLogger().debug(name + ' is not my teacher')
def _remove_teacher(self,func, name, address, port):
#discard ipv6 entries
if address.find(":") == -1:
if self.Teachers.has_key(name):
logging.getLogger().debug('teacher disappeared: ' + name)
if self.catched==name:
self.removeMyTeacher()
else:
self.Teachers.pop(name)
def listen(self):
#check different reasons to switch off (if you're root and your hostname has a classroom-oXX format:
if self.mylogin=='root' :
number=MyUtils.getDesktopNumber(self.myHostname)
if Configs.RootConfigs['offactivated'] == '1' and self.isLTSP != '' and number != '':
p=ping.do_one("192.168.0.254", 0.1)
if p is not None:
self.last_ping=datetime.datetime.now()
else:
self.off_if_timeout(self.last_ping)
if Configs.RootConfigs['offteacher']=='1':
if self.catched=='':
self.off_if_timeout(self.last_teacher)
else:
self.last_teacher= datetime.datetime.now()
if Configs.RootConfigs['offwithoutlogin']=='1':
active=False
if self.myVNC is not None:
if self.myVNC.procViewer is not None:
active=(self.myVNC.procViewer.poll() is None)
if self.broadcast is not None:
if self.broadcast.procRx is not None:
active=active or (self.broadcast.procRx.poll() is None)
if self.isLTSP=='':
not_user_logged=MyUtils.not_ltsp_logged()
else:
not_user_logged=MyUtils.ltsp_logged()
if not_user_logged and not active:
self.off_if_timeout(self.last_logged)
else:
self.last_logged=datetime.datetime.now()
#PENDING: when catched=='' find a way to restart the avahi browsing ¿self.startScan() , restart controlaula ?
if Configs.MonitorConfigs.GetGeneralConfig('sound')=='0':
Actions.setSound('mute')
reactor.callLater(self.interval, self.listen)
def newTeacher(self,name):
#self.getDisplay()
if self.myteacher is not None:
self.removeMyTeacher()
newteacher=self.Teachers[name]
#pending: checkings to be sure this is the right teacher
teacherIP=str( newteacher[0])
if self.mylogin!='root':
MyUtils.putLauncher( teacherIP,newteacher[1] , False)
self.myteacher=xmlrpclib.Server('http://'+teacherIP+ ':' + str(newteacher[1]) + '/RPC2')
self.factory = ControlFactory()
self.factory.maxRetries = 10
reactor.connectTCP(teacherIP, newteacher[1] + 1, self.factory)
self.factory.protocol.add_callback("lost", self.removeMyTeacher)
self.factory.protocol.add_callback("connected", self.listen)
self.factory.protocol.add_callback("commands",self.handleCommands)
self.catched=name
self.myIp=NetworkUtils.get_ip_inet_address(teacherIP)
self.myMAC=NetworkUtils.get_inet_HwAddr(teacherIP)
self.handler.myteacher=self.myteacher
self.handler.teacherIP=teacherIP
self.handler.teacher_port=str(newteacher[1])
self.handler.myIP=self.myIp
self.sendPhoto()
self.getTeacherData()
def sendPhoto(self):
if self.mylogin !='root':
face=MyUtils.getFaceFile()
if face=='':
logging.getLogger().debug('The user %s has not photo to send' % (self.mylogin))
else:
try:
f = xmlrpclib.Binary(open(face, 'rb').read())
self.myteacher.facepng(self.mylogin,self.myIp,f)
except:
logging.getLogger().error('The user %s could not send its photo' % (self.mylogin))
def checkClass(self,data={}):
if Configs.RootConfigs['classroomname']==data['classroomname']:
return True#it's a teacher of my classroom
elif MyUtils.classroomName()==data['classroomname']:
return True #network has changed and the computer now is associated to a new network
elif Configs.RootConfigs['classroomname']=="noclassroomname":
try:
if self.myteacher==None: #There's no classroomname, so link to the first one
return (data["ipINET"][:7]==NetworkUtils.get_ip_inet_address()[:7])
except: #if there is already a myteacher, self.myteacher==None will fail:
return False
else:
return False
def removeMyTeacher(self):
if self.Teachers.has_key(self.catched): #in case avahi hasn't detected the teacher has already gone..
self.Teachers.pop(self.catched)
self.catched=''
self.myteacher=None
if self.mylogin!='root':
MyUtils.putLauncher()
try:
self.factory.stopTrying()
except:
pass
def getTeacherData(self):
vncrp,vncwp,vncport,bcastport=self.myteacher.connData()
self.myVNC=VNC.VNC(False,vncrp,vncwp,vncport)
self.broadcast=Broadcast.Vlc(bcastport)
self.handler.myVNC=self.myVNC
self.handler.myBcast=self.broadcast
def handleCommands(self, orders):
for i in orders:
if self.handler.existCommand(i[0]):
self.handler.args=i[1:]
self.handler.process(i[0])
def off_if_timeout(self,initial_time):
if datetime.datetime.now()>(initial_time+ datetime.timedelta(seconds=int(Configs.RootConfigs['offtimeout'] ))):
Actions.switch_off()
|