/usr/lib/python2.7/dist-packages/ControlAula/ClassProtocol.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 | ##############################################################################
# -*- coding: utf-8 -*-
# Project: Controlaula
# Module: Classprotocol.py
# Purpose: Control protocol based on amp to communicate with clients
# Language: Python 2.6
# Date: 21-Jan-2012.
# Ver: 27-Jan-2012.
# Author: José L. Redrejo Rodríguez
# Copyright: 2009-2012 - 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/>.
#
##############################################################################
from twisted.protocols import amp
from twisted.internet import reactor
from twisted.internet.error import ConnectionDone
from twisted.internet.protocol import Factory
from twisted.protocols import policies
from ControlAula.Utils import Configs, MyUtils,NetworkUtils
from commands import RequestRegister, Ping
class ControlProtocol(amp.AMP, policies.TimeoutMixin):
connection_pool = {}
timeout_delay = 10
_callbacks = {'connected': [], 'lost': [], 'alive': [],'commands':[]}
@classmethod
def add_callback(self, sig_name, callback):
ControlProtocol._callbacks[sig_name].append(callback)
@classmethod
def clean_callbacks(self):
ControlProtocol._callbacks = {'connected': [], 'lost': [], 'alive': []}
def connectionMade(self):
"""This event raises when a connection is made,
both on the server and client sides"""
def checkin(v):
"""Add the connected client to the connection_pool"""
ControlProtocol.connection_pool[v['result']['uuid']]['hostip'] = \
v['result']['hostip']
ControlProtocol.connection_pool[v['result']['uuid']]['login'] = \
v['result']['login']
for cb in ControlProtocol._callbacks['connected']:
cb(self.transport.getPeer(), v['result'])
amp.AMP.connectionMade(self)
self.setTimeout(ControlProtocol.timeout_delay)
#If I am the server, do things:
try:
if self.transport.client:
self.server = True
new_transport = self.transport.getPeer()
new_uuid = new_transport.host + ':' + str(new_transport.port)
ControlProtocol.connection_pool[new_uuid] = {}
#Order the client to register & collect the data via checkin:
order = self.callRemote(RequestRegister, uid=new_uuid)
order.addCallback(checkin)
except:
self.server = False # I am a client, not a server
def timeoutConnection(self):
if self.server:
self.server_unplug()
else:
self.client_unplug()
if self.transport:
self.transport.loseConnection()
def connectionLost(self, reason):
amp.AMP.connectionLost(self, reason)
if self.server:
self.server_unplug()
else:
try:
if reason.check(ConnectionDone): #desconectado correctamente
self.client_unplug()
print "Conexión perdida con %s" % self.my_server
except:
pass
def client_unplug(self):
"""unplug teacher for this client"""
for cb in ControlProtocol._callbacks['lost']:
cb()
def server_unplug(self):
"""Pop the client from the connection_pool, unplugging this student
from the list of clients for this teacher"""
key = self._transportPeer.host + ':' + str(self._transportPeer.port)
if ControlProtocol.connection_pool.has_key(key): #else it has already been unplugged
unplugged = ControlProtocol.connection_pool[key]
ControlProtocol.connection_pool.pop(key)
if len(unplugged) >0 :
for cb in ControlProtocol._callbacks['lost']:
cb(unplugged['login'], unplugged['hostip'])
@RequestRegister.responder
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}
@Ping.responder
def ping(self,login,hostip):
self.resetTimeout()
self.client_login = login
self.client_hostip = hostip
for cb in ControlProtocol._callbacks['alive']:
cb(login,hostip)
if login == 'root':
key = hostip
else:
key =login + '@' + hostip
new_commands=[]
added_commands=[]
for cb in ControlProtocol._callbacks['commands']:
add_command=cb(key)
if len(add_command) >0 :
for command in add_command:
# convert to String all the elements:
safe_command=[]
for i in command:
if type(i) is list:
str_i=[str(n) for n in i]
safe_command = safe_command + str_i
else:
safe_command.append(str(i))
added_commands.append(safe_command)
if len(added_commands) > 0:
for command in added_commands:
new_commands.append({'args':command})
#return {'commands':[{'args':["1","2","3"]},{'args':['hola',]}]}
return {'commands': new_commands}
def resetTimer(self, instructions):
"""Reset the timeout when a ping succeeds"""
self.resetTimeout()
if len(instructions["commands"]) > 0:
orders=[]
for order in instructions["commands"]:
received_order=order['args']
orders.append([True if i=='True' else False if i=='False' else i for i in received_order])
for cb in ControlProtocol._callbacks['commands']:
cb(orders)
def pingFailed(self, reason):
"""Error callback for pings"""
if reason.check(ConnectionDone): #desconectado correctamente
self.client_unplug()
def doPing(self):
"""Do pings to the server whenever a connection exists:"""
d = self.callRemote(Ping, login = self.mylogin, hostip= self.hostip)
d.addCallback(self.resetTimer)
d.addErrback(self.pingFailed)
if self.transport:
reactor.callLater(ControlProtocol.timeout_delay / 2, self.doPing)
def main():
"""main method used only for testing purposes"""
def conectado(*args):
print "conectado", args
def contacto(*args):
print "contacto", args
def desconectado(*args):
print "desconectado", args
pf = Factory()
pf.protocol = ControlProtocol
pf.protocol.add_callback("connected", conectado)
pf.protocol.add_callback("alive", contacto)
pf.protocol.add_callback("lost", desconectado)
reactor.listenTCP(1234, pf)
print 'started'
reactor.run()
if __name__ == '__main__':
main()
|