lib/python/Components/ParentalControl.py

   1 from Components.config import config, ConfigSubsection, ConfigSelection, ConfigPIN, ConfigText, ConfigYesNo, ConfigSubList, ConfigInteger
   2 #from Screens.ChannelSelection import service_types_tv
   3 from Screens.InputBox import PinInput
   4 from Screens.MessageBox import MessageBox
   5 from Tools.BoundFunction import boundFunction
   6 from ServiceReference import ServiceReference
   7 from Tools import Notifications
   8 from Tools.Directories import resolveFilename, SCOPE_CONFIG
   9 from enigma import eTimer
  10 import time
  11
  12 TYPE_SERVICE = "SERVICE"
  13 TYPE_BOUQUETSERVICE = "BOUQUETSERVICE"
  14 TYPE_BOUQUET = "BOUQUET"
  15 LIST_BLACKLIST = "blacklist"
  16 LIST_WHITELIST = "whitelist"
  17
  18 IMG_WHITESERVICE = LIST_WHITELIST + "-" + TYPE_SERVICE
  19 IMG_WHITEBOUQUET = LIST_WHITELIST + "-" + TYPE_BOUQUET
  20 IMG_BLACKSERVICE = LIST_BLACKLIST + "-" + TYPE_SERVICE
  21 IMG_BLACKBOUQUET = LIST_BLACKLIST + "-" + TYPE_BOUQUET
  22
  23 def InitParentalControl():
  24         config.ParentalControl = ConfigSubsection()
  25         config.ParentalControl.configured = ConfigYesNo(default = False)
  26         config.ParentalControl.mode = ConfigSelection(default = "simple", choices = [("simple", _("simple")), ("complex", _("complex"))])
  27         config.ParentalControl.storeservicepin = ConfigSelection(default = "never", choices = [("never", _("never")), ("5", _("5 minutes")), ("30", _("30 minutes")), ("60", _("60 minutes")), ("standby", _("until standby/restart"))])
  28         config.ParentalControl.storeservicepincancel = ConfigSelection(default = "never", choices = [("never", _("never")), ("5", _("5 minutes")), ("30", _("30 minutes")), ("60", _("60 minutes")), ("standby", _("until standby/restart"))])
  29         config.ParentalControl.servicepinactive = ConfigYesNo(default = False)
  30         config.ParentalControl.setuppinactive = ConfigYesNo(default = False)
  31         config.ParentalControl.type = ConfigSelection(default = "blacklist", choices = [(LIST_WHITELIST, _("whitelist")), (LIST_BLACKLIST, _("blacklist"))])
  32         config.ParentalControl.setuppin = ConfigPIN(default = -1)
  33
  34         config.ParentalControl.retries = ConfigSubsection()
  35         config.ParentalControl.retries.setuppin = ConfigSubsection()
  36         config.ParentalControl.retries.setuppin.tries = ConfigInteger(default = 3)
  37         config.ParentalControl.retries.setuppin.time = ConfigInteger(default = 3)
  38         config.ParentalControl.retries.servicepin = ConfigSubsection()
  39         config.ParentalControl.retries.servicepin.tries = ConfigInteger(default = 3)
  40         config.ParentalControl.retries.servicepin.time = ConfigInteger(default = 3)
  41 #       config.ParentalControl.configured = configElement("config.ParentalControl.configured", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
  42         #config.ParentalControl.mode = configElement("config.ParentalControl.mode", configSelection, 0, (("simple", _("simple")), ("complex", _("complex"))))
  43         #config.ParentalControl.storeservicepin = configElement("config.ParentalControl.storeservicepin", configSelection, 0, (("never", _("never")), ("5_minutes", _("5 minutes")), ("30_minutes", _("30 minutes")), ("60_minutes", _("60 minutes")), ("restart", _("until restart"))))
  44         #config.ParentalControl.servicepinactive = configElement("config.ParentalControl.servicepinactive", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
  45         #config.ParentalControl.setuppinactive = configElement("config.ParentalControl.setuppinactive", configSelection, 1, (("yes", _("yes")), ("no", _("no"))))
  46         #config.ParentalControl.type = configElement("config.ParentalControl.type", configSelection, 0, (("whitelist", _("whitelist")), ("blacklist", _("blacklist"))))
  47         #config.ParentalControl.setuppin = configElement("config.ParentalControl.setuppin", configSequence, "0000", configSequenceArg().get("PINCODE", (4, "")))
  48
  49         config.ParentalControl.servicepin = ConfigSubList()
  50
  51         for i in (0, 1, 2):
  52                 config.ParentalControl.servicepin.append(ConfigPIN(default = -1))
  53                 #config.ParentalControl.servicepin.append(configElement("config.ParentalControl.servicepin.level" + str(i), configSequence, "0000", configSequenceArg().get("PINCODE", (4, ""))))
  54
  55 class ParentalControl:
  56         def __init__(self):
  57                 #Do not call open on init, because bouquets are not ready at that moment
  58                 self.open()
  59                 self.serviceLevel = {}
  60                 #Instead: Use Flags to see, if we already initialized config and called open
  61                 self.configInitialized = False
  62                 #This is the timer that is used to see, if the time for caching the pin is over
  63                 #Of course we could also work without a timer and compare the times every
  64                 #time we call isServicePlayable. But this might probably slow down zapping,
  65                 #That's why I decided to use a timer
  66                 self.sessionPinTimer = eTimer()
  67                 self.sessionPinTimer.callback.append(self.resetSessionPin)
  68
  69         def serviceMethodWrapper(self, service, method, *args):
  70                 #This method is used to call all functions that need a service as Parameter:
  71                 #It takes either a Service- Reference or a Bouquet- Reference and passes
  72                 #Either the service or all services contained in the bouquet to the method given
  73                 #That way all other functions do not need to distinguish between service and bouquet.
  74                 if "FROM BOUQUET" in service:
  75                         method( service , TYPE_BOUQUET , *args )
  76                         servicelist = self.readServicesFromBouquet(service,"C")
  77                         for ref in servicelist:
  78                                 sRef = str(ref[0])
  79                                 method( sRef , TYPE_BOUQUETSERVICE , *args )
  80                 else:
  81                         ref = ServiceReference(service)
  82                         sRef = str(ref)
  83                         method( sRef , TYPE_SERVICE , *args )
  84
  85         def setServiceLevel(self, service, type, level):
  86                 self.serviceLevel[service] = level
  87
  88         def isServicePlayable(self, ref, callback):
  89                 if not config.ParentalControl.configured.value or not config.ParentalControl.servicepinactive.value:
  90                         return True
  91                 #Check if configuration has already been read or if the significant values have changed.
  92                 #If true: read the configuration
  93                 if self.configInitialized == False or self.storeServicePin != config.ParentalControl.storeservicepin.value or self.storeServicePinCancel != config.ParentalControl.storeservicepincancel.value:
  94                         self.getConfigValues()
  95                 service = ref.toCompareString()
  96                 if (config.ParentalControl.type.value == LIST_WHITELIST and not self.whitelist.has_key(service)) or (config.ParentalControl.type.value == LIST_BLACKLIST and self.blacklist.has_key(service)):
  97                         #Check if the session pin is cached and return the cached value, if it is.
  98                         if self.sessionPinCached == True:
  99                                 #As we can cache successful pin- entries as well as canceled pin- entries,
 100                                 #We give back the last action
 101                                 return self.sessionPinCachedValue
 102                         self.callback = callback
 103                         #Someone started to implement different levels of protection. Seems they were never completed
 104                         #I did not throw out this code, although it is of no use at the moment
 105                         levelNeeded = 0
 106                         if self.serviceLevel.has_key(service):
 107                                 levelNeeded = self.serviceLevel[service]
 108                         pinList = self.getPinList()[:levelNeeded + 1]
 109                         Notifications.AddNotificationWithCallback(boundFunction(self.servicePinEntered, ref), PinInput, triesEntry = config.ParentalControl.retries.servicepin, pinList = pinList, service = ServiceReference(ref).getServiceName(), title = _("this service is protected by a parental control pin"), windowTitle = _("Parental control"))
 110                         return False
 111                 else:
 112                         return True
 113
 114         def protectService(self, service):
 115                 if config.ParentalControl.type.value == LIST_WHITELIST:
 116                         if self.whitelist.has_key(service):
 117                                 self.serviceMethodWrapper(service, self.removeServiceFromList, self.whitelist)
 118                                 #self.deleteWhitelistService(service)
 119                 else: # blacklist
 120                         if not self.blacklist.has_key(service):
 121                                 self.serviceMethodWrapper(service, self.addServiceToList, self.blacklist)
 122                                 #self.addBlacklistService(service)
 123                 #print "whitelist:", self.whitelist
 124                 #print "blacklist:", self.blacklist
 125
 126         def unProtectService(self, service):
 127                 #print "unprotect"
 128                 #print "config.ParentalControl.type.value:", config.ParentalControl.type.value
 129                 if config.ParentalControl.type.value == LIST_WHITELIST:
 130                         if not self.whitelist.has_key(service):
 131                                 self.serviceMethodWrapper(service, self.addServiceToList, self.whitelist)
 132                                 #self.addWhitelistService(service)
 133                 else: # blacklist
 134                         if self.blacklist.has_key(service):
 135                                 self.serviceMethodWrapper(service, self.removeServiceFromList, self.blacklist)
 136                                 #self.deleteBlacklistService(service)
 137                 #print "whitelist:", self.whitelist
 138                 #print "blacklist:", self.blacklist
 139
 140         def getProtectionLevel(self, service):
 141                 if (config.ParentalControl.type.value == LIST_WHITELIST and not self.whitelist.has_key(service)) or (config.ParentalControl.type.value == LIST_BLACKLIST and self.blacklist.has_key(service)):
 142                         if self.serviceLevel.has_key(service):
 143                                 return self.serviceLevel[service]
 144                         else:
 145                                 return 0
 146                 else:
 147                         return -1
 148
 149         def getProtectionType(self, service):
 150                 #New method used in ParentalControlList: This method does not only return
 151                 #if a service is protected or not, it also returns, why (whitelist or blacklist, service or bouquet)
 152                 sImage = ""
 153                 if (config.ParentalControl.type.value == LIST_WHITELIST):
 154                         if self.whitelist.has_key(service):
 155                                 if TYPE_SERVICE in self.whitelist[service]:
 156                                         sImage = IMG_WHITESERVICE
 157                                 else:
 158                                         sImage = IMG_WHITEBOUQUET
 159                 elif (config.ParentalControl.type.value == LIST_BLACKLIST):
 160                         if self.blacklist.has_key(service):
 161                                 if TYPE_SERVICE in self.blacklist[service]:
 162                                         sImage = IMG_BLACKSERVICE
 163                                 else:
 164                                         sImage = IMG_BLACKBOUQUET
 165                 bLocked = self.getProtectionLevel(service) != -1
 166                 return (bLocked,sImage)
 167
 168         def getConfigValues(self):
 169                 #Read all values from configuration
 170                 self.checkPinInterval = False
 171                 self.checkPinIntervalCancel = False
 172                 self.checkSessionPin = False
 173                 self.checkSessionPinCancel = False
 174
 175                 self.sessionPinCached = False
 176                 self.pinIntervalSeconds = 0
 177                 self.pinIntervalSecondsCancel = 0
 178
 179                 self.storeServicePin = config.ParentalControl.storeservicepin.value
 180                 self.storeServicePinCancel = config.ParentalControl.storeservicepincancel.value
 181
 182                 if self.storeServicePin == "never":
 183                         pass
 184                 elif self.storeServicePin == "standby":
 185                         self.checkSessionPin = True
 186                 else:
 187                         self.checkPinInterval = True
 188                         iMinutes = float(self.storeServicePin)
 189                         iSeconds = iMinutes*60
 190                         self.pinIntervalSeconds = iSeconds
 191
 192                 if self.storeServicePinCancel == "never":
 193                         pass
 194                 elif self.storeServicePinCancel == "standby":
 195                         self.checkSessionPinCancel = True
 196                 else:
 197                         self.checkPinIntervalCancel = True
 198                         iMinutes = float(self.storeServicePinCancel)
 199                         iSeconds = iMinutes*60
 200                         self.pinIntervalSecondsCancel = iSeconds
 201
 202                 self.configInitialized = True
 203                 # Reset PIN cache on standby: Use StandbyCounter- Config- Callback
 204                 config.misc.standbyCounter.addNotifier(self.standbyCounterCallback, initial_call = False)
 205
 206         def standbyCounterCallback(self, configElement):
 207                 self.resetSessionPin()
 208
 209         def resetSessionPin(self):
 210                 #Reset the session pin, stop the timer
 211                 self.sessionPinCached = False
 212                 self.sessionPinTimer.stop()
 213
 214         def getCurrentTimeStamp(self):
 215                 return time.time()
 216
 217         def getPinList(self):
 218                 return [ x.value for x in config.ParentalControl.servicepin ]
 219
 220         def servicePinEntered(self, service, result):
 221
 222                 if result is not None and result:
 223                         #This is the new function of caching the service pin
 224                         #save last session and time of last entered pin...
 225                         if self.checkSessionPin == True:
 226                                 self.sessionPinCached = True
 227                                 self.sessionPinCachedValue = True
 228                         if self.checkPinInterval == True:
 229                                 self.sessionPinCached = True
 230                                 self.sessionPinCachedValue = True
 231                                 self.sessionPinTimer.start(self.pinIntervalSeconds*1000,1)
 232                         self.callback(ref = service)
 233                 else:
 234                         #This is the new function of caching cancelling of service pin
 235                         if result is not None:
 236                                 Notifications.AddNotification(MessageBox,  _("The pin code you entered is wrong."), MessageBox.TYPE_ERROR)
 237                         else:
 238                                 if self.checkSessionPinCancel == True:
 239                                         self.sessionPinCached = True
 240                                         self.sessionPinCachedValue = False
 241                                 if self.checkPinIntervalCancel == True:
 242                                         self.sessionPinCached = True
 243                                         self.sessionPinCachedValue = False
 244                                         self.sessionPinTimer.start(self.pinIntervalSecondsCancel*1000,1)
 245
 246         def saveListToFile(self,sWhichList):
 247                 #Replaces saveWhiteList and saveBlackList:
 248                 #I don't like to have two functions with identical code...
 249                 if sWhichList == LIST_BLACKLIST:
 250                         vList = self.blacklist
 251                 else:
 252                         vList = self.whitelist
 253                 file = open(resolveFilename(SCOPE_CONFIG, sWhichList), 'w')
 254                 for sService,sType in vList.iteritems():
 255                         #Only Services that are selected directly and Bouqets are saved.
 256                         #Services that are added by a bouquet are not saved.
 257                         #This is the reason for the change in self.whitelist and self.blacklist
 258                         if TYPE_SERVICE in sType or TYPE_BOUQUET in sType:
 259                                 file.write(str(sService) + "\n")
 260                 file.close
 261
 262         def openListFromFile(self,sWhichList):
 263                 #Replaces openWhiteList and openBlackList:
 264                 #I don't like to have two functions with identical code...
 265                 if sWhichList == LIST_BLACKLIST:
 266                         self.blacklist = {}
 267                         vList = self.blacklist
 268                 else:
 269                         self.whitelist = {}
 270                         vList = self.whitelist
 271                 try:
 272                         file = open(resolveFilename(SCOPE_CONFIG, sWhichList ), 'r')
 273                         lines = file.readlines()
 274                         for x in lines:
 275                                 sPlain = x.strip()
 276                                 self.serviceMethodWrapper(sPlain, self.addServiceToList, vList)
 277                         file.close
 278                 except:
 279                         pass
 280
 281         def addServiceToList(self, service, type, vList):
 282                 #Replaces addWhitelistService and addBlacklistService
 283                 #The lists are not only lists of service references any more.
 284                 #They are named lists with the service as key and an array of types as value:
 285
 286                 if vList.has_key(service):
 287                         if not type in vList[service]:
 288                                 vList[service].append(type)
 289                 else:
 290                         vList[service] = [type]
 291
 292         def removeServiceFromList(self, service, type, vList):
 293                 #Replaces deleteWhitelistService and deleteBlacklistService
 294                 if vList.has_key(service):
 295                         if type in vList[service]:
 296                                 vList[service].remove(type)
 297                         if not vList[service]:
 298                                 del vList[service]
 299                 if self.serviceLevel.has_key(service):
 300                         self.serviceLevel.remove(service)
 301
 302         def readServicesFromBouquet(self,sBouquetSelection,formatstring):
 303                 #This method gives back a list of services for a given bouquet
 304                 from enigma import eServiceCenter, eServiceReference
 305                 from Screens.ChannelSelection import service_types_tv
 306                 serviceHandler = eServiceCenter.getInstance()
 307                 refstr = sBouquetSelection
 308                 root = eServiceReference(refstr)
 309                 list = serviceHandler.list(root)
 310                 if list is not None:
 311                         services = list.getContent("CN", True) #(servicecomparestring, name)
 312                         return services
 313
 314         def save(self):
 315                 # we need to open the files in case we havent's read them yet
 316                 self.saveListToFile(LIST_BLACKLIST)
 317                 self.saveListToFile(LIST_WHITELIST)
 318
 319         def open(self):
 320                 self.openListFromFile(LIST_BLACKLIST)
 321                 self.openListFromFile(LIST_WHITELIST)
 322
 323 parentalControl = ParentalControl()