lib/python/Components/Network.py

   1 from os import system, popen, path as os_path, listdir
   2 from re import compile as re_compile, search as re_search
   3 from socket import *
   4 from enigma import eConsoleAppContainer
   5 from Components.Console import Console
   6
   7 class Network:
   8         def __init__(self):
   9                 self.ifaces = {}
  10                 self.configuredInterfaces = []
  11                 self.configuredNetworkAdapters = []
  12                 self.NetworkState = 0
  13                 self.DnsState = 0
  14                 self.nameservers = []
  15                 self.ethtool_bin = "/usr/sbin/ethtool"
  16                 self.container = eConsoleAppContainer()
  17                 self.Console = Console()
  18                 self.LinkConsole = Console()
  19                 self.restartConsole = Console()
  20                 self.deactivateConsole = Console()
  21                 self.deactivateInterfaceConsole = Console()
  22                 self.activateConsole = Console()
  23                 self.resetNetworkConsole = Console()
  24                 self.DnsConsole = Console()
  25                 self.getInterfaces()
  26
  27         def getInterfaces(self, callback = None):
  28                 devicesPattern = re_compile('[a-z]+[0-9]+')
  29                 self.configuredInterfaces = []
  30                 fp = file('/proc/net/dev', 'r')
  31                 result = fp.readlines()
  32                 fp.close()
  33                 for line in result:
  34                         try:
  35                                 device = devicesPattern.search(line).group()
  36                                 if device == 'wifi0':
  37                                         continue
  38                                 self.getDataForInterface(device, callback)
  39                         except AttributeError:
  40                                 pass
  41                 #print "self.ifaces:", self.ifaces
  42                 #self.writeNetworkConfig()
  43                 #print ord(' ')
  44                 #for line in result:
  45                 #       print ord(line[0])
  46
  47         # helper function
  48         def regExpMatch(self, pattern, string):
  49                 if string is None:
  50                         return None
  51                 try:
  52                         return pattern.search(string).group()
  53                 except AttributeError:
  54                         None
  55
  56         # helper function to convert ips from a sring to a list of ints
  57         def convertIP(self, ip):
  58                 strIP = ip.split('.')
  59                 ip = []
  60                 for x in strIP:
  61                         ip.append(int(x))
  62                 return ip
  63
  64         def getDataForInterface(self, iface,callback):
  65                 #get ip out of ip addr, as avahi sometimes overrides it in ifconfig.
  66                 if not self.Console:
  67                         self.Console = Console()
  68                 cmd = "ip -o addr"
  69                 self.Console.ePopen(cmd, self.IPaddrFinished, [iface,callback])
  70
  71         def IPaddrFinished(self, result, retval, extra_args):
  72                 (iface, callback ) = extra_args
  73                 data = { 'up': False, 'dhcp': False, 'preup' : False, 'postdown' : False }
  74                 globalIPpattern = re_compile("scope global")
  75                 ipRegexp = '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
  76                 netRegexp = '[0-9]{1,2}'
  77                 macRegexp = '[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[a-z0-9]{2}\:[a-z0-9]{2}\:[a-z0-9]{2}'
  78                 ipLinePattern = re_compile('inet ' + ipRegexp + '/')
  79                 ipPattern = re_compile(ipRegexp)
  80                 netmaskLinePattern = re_compile('/' + netRegexp)
  81                 netmaskPattern = re_compile(netRegexp)
  82                 bcastLinePattern = re_compile(' brd ' + ipRegexp)
  83                 upPattern = re_compile('UP')
  84                 macPattern = re_compile('[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[a-z0-9]{2}\:[a-z0-9]{2}\:[a-z0-9]{2}')
  85                 macLinePattern = re_compile('link/ether ' + macRegexp)
  86
  87                 for line in result.splitlines():
  88                         split = line.strip().split(' ',2)
  89                         if (split[1][:-1] == iface):
  90                                 up = self.regExpMatch(upPattern, split[2])
  91                                 mac = self.regExpMatch(macPattern, self.regExpMatch(macLinePattern, split[2]))
  92                                 if up is not None:
  93                                         data['up'] = True
  94                                         if iface is not 'lo':
  95                                                 self.configuredInterfaces.append(iface)
  96                                 if mac is not None:
  97                                         data['mac'] = mac
  98                         if (split[1] == iface):
  99                                 if re_search(globalIPpattern, split[2]):
 100                                         ip = self.regExpMatch(ipPattern, self.regExpMatch(ipLinePattern, split[2]))
 101                                         netmask = self.calc_netmask(self.regExpMatch(netmaskPattern, self.regExpMatch(netmaskLinePattern, split[2])))
 102                                         bcast = self.regExpMatch(ipPattern, self.regExpMatch(bcastLinePattern, split[2]))
 103                                         if ip is not None:
 104                                                 data['ip'] = self.convertIP(ip)
 105                                         if netmask is not None:
 106                                                 data['netmask'] = self.convertIP(netmask)
 107                                         if bcast is not None:
 108                                                 data['bcast'] = self.convertIP(bcast)
 109
 110                 if not data.has_key('ip'):
 111                         data['dhcp'] = True
 112                         data['ip'] = [0, 0, 0, 0]
 113                         data['netmask'] = [0, 0, 0, 0]
 114                         data['gateway'] = [0, 0, 0, 0]
 115
 116                 cmd = "route -n | grep  " + iface
 117                 self.Console.ePopen(cmd,self.routeFinished, [iface, data, callback])
 118
 119         def routeFinished(self, result, retval, extra_args):
 120                 (iface, data, callback) = extra_args
 121                 ipRegexp = '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
 122                 ipPattern = re_compile(ipRegexp)
 123                 ipLinePattern = re_compile(ipRegexp)
 124
 125                 for line in result.splitlines():
 126                         print line[0:7]
 127                         if line[0:7] == "0.0.0.0":
 128                                 gateway = self.regExpMatch(ipPattern, line[16:31])
 129                                 if gateway is not None:
 130                                         data['gateway'] = self.convertIP(gateway)
 131
 132                 self.ifaces[iface] = data
 133                 self.loadNetworkConfig(iface,callback)
 134
 135         def writeNetworkConfig(self):
 136                 self.configuredInterfaces = []
 137                 fp = file('/etc/network/interfaces', 'w')
 138                 fp.write("# automatically generated by enigma 2\n# do NOT change manually!\n\n")
 139                 fp.write("auto lo\n")
 140                 fp.write("iface lo inet loopback\n\n")
 141                 for ifacename, iface in self.ifaces.items():
 142                         if iface['up'] == True:
 143                                 fp.write("auto " + ifacename + "\n")
 144                                 self.configuredInterfaces.append(ifacename)
 145                         if iface['dhcp'] == True:
 146                                 fp.write("iface "+ ifacename +" inet dhcp\n")
 147                         if iface['dhcp'] == False:
 148                                 fp.write("iface "+ ifacename +" inet static\n")
 149                                 if iface.has_key('ip'):
 150                                         print tuple(iface['ip'])
 151                                         fp.write("      address %d.%d.%d.%d\n" % tuple(iface['ip']))
 152                                         fp.write("      netmask %d.%d.%d.%d\n" % tuple(iface['netmask']))
 153                                         if iface.has_key('gateway'):
 154                                                 fp.write("      gateway %d.%d.%d.%d\n" % tuple(iface['gateway']))
 155                         if iface.has_key("configStrings"):
 156                                 fp.write("\n" + iface["configStrings"] + "\n")
 157                         if iface["preup"] is not False and not iface.has_key("configStrings"):
 158                                 fp.write(iface["preup"])
 159                                 fp.write(iface["postdown"])
 160                         fp.write("\n")
 161                 fp.close()
 162                 self.writeNameserverConfig()
 163
 164         def writeNameserverConfig(self):
 165                 fp = file('/etc/resolv.conf', 'w')
 166                 for nameserver in self.nameservers:
 167                         fp.write("nameserver %d.%d.%d.%d\n" % tuple(nameserver))
 168                 fp.close()
 169
 170         def loadNetworkConfig(self,iface,callback = None):
 171                 interfaces = []
 172                 # parse the interfaces-file
 173                 try:
 174                         fp = file('/etc/network/interfaces', 'r')
 175                         interfaces = fp.readlines()
 176                         fp.close()
 177                 except:
 178                         print "[Network.py] interfaces - opening failed"
 179
 180                 ifaces = {}
 181                 currif = ""
 182                 for i in interfaces:
 183                         split = i.strip().split(' ')
 184                         if (split[0] == "iface"):
 185                                 currif = split[1]
 186                                 ifaces[currif] = {}
 187                                 if (len(split) == 4 and split[3] == "dhcp"):
 188                                         ifaces[currif]["dhcp"] = True
 189                                 else:
 190                                         ifaces[currif]["dhcp"] = False
 191                         if (currif == iface): #read information only for available interfaces
 192                                 if (split[0] == "address"):
 193                                         ifaces[currif]["address"] = map(int, split[1].split('.'))
 194                                         if self.ifaces[currif].has_key("ip"):
 195                                                 if self.ifaces[currif]["ip"] != ifaces[currif]["address"] and ifaces[currif]["dhcp"] == False:
 196                                                         self.ifaces[currif]["ip"] = map(int, split[1].split('.'))
 197                                 if (split[0] == "netmask"):
 198                                         ifaces[currif]["netmask"] = map(int, split[1].split('.'))
 199                                         if self.ifaces[currif].has_key("netmask"):
 200                                                 if self.ifaces[currif]["netmask"] != ifaces[currif]["netmask"] and ifaces[currif]["dhcp"] == False:
 201                                                         self.ifaces[currif]["netmask"] = map(int, split[1].split('.'))
 202                                 if (split[0] == "gateway"):
 203                                         ifaces[currif]["gateway"] = map(int, split[1].split('.'))
 204                                         if self.ifaces[currif].has_key("gateway"):
 205                                                 if self.ifaces[currif]["gateway"] != ifaces[currif]["gateway"] and ifaces[currif]["dhcp"] == False:
 206                                                         self.ifaces[currif]["gateway"] = map(int, split[1].split('.'))
 207                                 if (split[0] == "pre-up"):
 208                                         if self.ifaces[currif].has_key("preup"):
 209                                                 self.ifaces[currif]["preup"] = i
 210                                 if (split[0] == "post-down"):
 211                                         if self.ifaces[currif].has_key("postdown"):
 212                                                 self.ifaces[currif]["postdown"] = i
 213
 214                 for ifacename, iface in ifaces.items():
 215                         if self.ifaces.has_key(ifacename):
 216                                 self.ifaces[ifacename]["dhcp"] = iface["dhcp"]
 217                 if self.Console:
 218                         if len(self.Console.appContainers) == 0:
 219                                 # save configured interfacelist
 220                                 self.configuredNetworkAdapters = self.configuredInterfaces
 221                                 # load ns only once
 222                                 self.loadNameserverConfig()
 223                                 print "read configured interfac:", ifaces
 224                                 print "self.ifaces after loading:", self.ifaces
 225                                 if callback is not None:
 226                                         callback(True)
 227
 228         def loadNameserverConfig(self):
 229                 ipRegexp = "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
 230                 nameserverPattern = re_compile("nameserver +" + ipRegexp)
 231                 ipPattern = re_compile(ipRegexp)
 232
 233                 resolv = []
 234                 try:
 235                         fp = file('/etc/resolv.conf', 'r')
 236                         resolv = fp.readlines()
 237                         fp.close()
 238                         self.nameservers = []
 239                 except:
 240                         print "[Network.py] resolv.conf - opening failed"
 241
 242                 for line in resolv:
 243                         if self.regExpMatch(nameserverPattern, line) is not None:
 244                                 ip = self.regExpMatch(ipPattern, line)
 245                                 if ip is not None:
 246                                         self.nameservers.append(self.convertIP(ip))
 247
 248                 print "nameservers:", self.nameservers
 249
 250         def deactivateNetworkConfig(self, callback = None):
 251                 self.deactivateConsole = Console()
 252                 self.commands = []
 253                 self.commands.append("/etc/init.d/avahi-daemon stop")
 254                 for iface in self.ifaces.keys():
 255                         cmd = "ip addr flush " + iface
 256                         self.commands.append(cmd)
 257                 self.commands.append("/etc/init.d/networking stop")
 258                 self.commands.append("killall -9 udhcpc")
 259                 self.commands.append("rm /var/run/udhcpc*")
 260                 self.deactivateConsole.eBatch(self.commands, self.deactivateNetworkFinished, callback, debug=True)
 261
 262         def deactivateNetworkFinished(self,extra_args):
 263                 callback = extra_args
 264                 if len(self.deactivateConsole.appContainers) == 0:
 265                         if callback is not None:
 266                                 callback(True)
 267
 268         def activateNetworkConfig(self, callback = None):
 269                 self.activateConsole = Console()
 270                 self.commands = []
 271                 self.commands.append("/etc/init.d/networking start")
 272                 self.commands.append("/etc/init.d/avahi-daemon start")
 273                 self.activateConsole.eBatch(self.commands, self.activateNetworkFinished, callback, debug=True)
 274
 275         def activateNetworkFinished(self,extra_args):
 276                 callback = extra_args
 277                 if len(self.activateConsole.appContainers) == 0:
 278                         if callback is not None:
 279                                 callback(True)
 280
 281         def getConfiguredAdapters(self):
 282                 return self.configuredNetworkAdapters
 283
 284         def getNumberOfAdapters(self):
 285                 return len(self.ifaces)
 286
 287         def getFriendlyAdapterName(self, x):
 288                 # maybe this needs to be replaced by an external list.
 289                 friendlyNames = {
 290                         "eth0": _("Integrated Ethernet"),
 291                         "wlan0": _("Wireless"),
 292                         "ath0": _("Integrated Wireless")
 293                 }
 294                 return friendlyNames.get(x, x) # when we have no friendly name, use adapter name
 295
 296         def getAdapterName(self, iface):
 297                 return iface
 298
 299         def getAdapterList(self):
 300                 return self.ifaces.keys()
 301
 302         def getAdapterAttribute(self, iface, attribute):
 303                 if self.ifaces.has_key(iface):
 304                         if self.ifaces[iface].has_key(attribute):
 305                                 return self.ifaces[iface][attribute]
 306                 return None
 307
 308         def setAdapterAttribute(self, iface, attribute, value):
 309                 print "setting for adapter", iface, "attribute", attribute, " to value", value
 310                 if self.ifaces.has_key(iface):
 311                         self.ifaces[iface][attribute] = value
 312
 313         def removeAdapterAttribute(self, iface, attribute):
 314                 if self.ifaces.has_key(iface):
 315                         if self.ifaces[iface].has_key(attribute):
 316                                 del self.ifaces[iface][attribute]
 317
 318         def getNameserverList(self):
 319                 if len(self.nameservers) == 0:
 320                         return [[0, 0, 0, 0], [0, 0, 0, 0]]
 321                 else:
 322                         return self.nameservers
 323
 324         def clearNameservers(self):
 325                 self.nameservers = []
 326
 327         def addNameserver(self, nameserver):
 328                 if nameserver not in self.nameservers:
 329                         self.nameservers.append(nameserver)
 330
 331         def removeNameserver(self, nameserver):
 332                 if nameserver in self.nameservers:
 333                         self.nameservers.remove(nameserver)
 334
 335         def changeNameserver(self, oldnameserver, newnameserver):
 336                 if oldnameserver in self.nameservers:
 337                         for i in range(len(self.nameservers)):
 338                                 if self.nameservers[i] == oldnameserver:
 339                                         self.nameservers[i] = newnameserver
 340
 341         def resetNetworkConfig(self, mode='lan', callback = None):
 342                 self.resetNetworkConsole = Console()
 343                 self.commands = []
 344                 self.commands.append("/etc/init.d/avahi-daemon stop")
 345                 for iface in self.ifaces.keys():
 346                         cmd = "ip addr flush " + iface
 347                         self.commands.append(cmd)
 348                 self.commands.append("/etc/init.d/networking stop")
 349                 self.commands.append("killall -9 udhcpc")
 350                 self.commands.append("rm /var/run/udhcpc*")
 351                 self.resetNetworkConsole.eBatch(self.commands, self.resetNetworkFinishedCB, [mode, callback], debug=True)
 352
 353         def resetNetworkFinishedCB(self, extra_args):
 354                 (mode, callback) = extra_args
 355                 if len(self.resetNetworkConsole.appContainers) == 0:
 356                         self.writeDefaultNetworkConfig(mode, callback)
 357
 358         def writeDefaultNetworkConfig(self,mode='lan', callback = None):
 359                 fp = file('/etc/network/interfaces', 'w')
 360                 fp.write("# automatically generated by enigma 2\n# do NOT change manually!\n\n")
 361                 fp.write("auto lo\n")
 362                 fp.write("iface lo inet loopback\n\n")
 363                 if mode == 'wlan':
 364                         fp.write("auto wlan0\n")
 365                         fp.write("iface wlan0 inet dhcp\n")
 366                 if mode == 'wlan-mpci':
 367                         fp.write("auto ath0\n")
 368                         fp.write("iface ath0 inet dhcp\n")
 369                 if mode == 'lan':
 370                         fp.write("auto eth0\n")
 371                         fp.write("iface eth0 inet dhcp\n")
 372                 fp.write("\n")
 373                 fp.close()
 374
 375                 self.resetNetworkConsole = Console()
 376                 self.commands = []
 377                 if mode == 'wlan':
 378                         self.commands.append("ifconfig eth0 down")
 379                         self.commands.append("ifconfig ath0 down")
 380                         self.commands.append("ifconfig wlan0 up")
 381                 if mode == 'wlan-mpci':
 382                         self.commands.append("ifconfig eth0 down")
 383                         self.commands.append("ifconfig wlan0 down")
 384                         self.commands.append("ifconfig ath0 up")
 385                 if mode == 'lan':
 386                         self.commands.append("ifconfig eth0 up")
 387                         self.commands.append("ifconfig wlan0 down")
 388                         self.commands.append("ifconfig ath0 down")
 389                 self.commands.append("/etc/init.d/avahi-daemon start")
 390                 self.resetNetworkConsole.eBatch(self.commands, self.resetNetworkFinished, [mode,callback], debug=True)
 391
 392         def resetNetworkFinished(self,extra_args):
 393                 (mode, callback) = extra_args
 394                 if len(self.resetNetworkConsole.appContainers) == 0:
 395                         if callback is not None:
 396                                 callback(True,mode)
 397
 398         def checkNetworkState(self,statecallback):
 399                 # www.dream-multimedia-tv.de, www.heise.de, www.google.de
 400                 cmd1 = "ping -c 1 82.149.226.170"
 401                 cmd2 = "ping -c 1 193.99.144.85"
 402                 cmd3 = "ping -c 1 209.85.135.103"
 403                 self.PingConsole = Console()
 404                 self.PingConsole.ePopen(cmd1, self.checkNetworkStateFinished,statecallback)
 405                 self.PingConsole.ePopen(cmd2, self.checkNetworkStateFinished,statecallback)
 406                 self.PingConsole.ePopen(cmd3, self.checkNetworkStateFinished,statecallback)
 407
 408         def checkNetworkStateFinished(self, result, retval,extra_args):
 409                 (statecallback) = extra_args
 410                 if self.PingConsole is not None:
 411                         if retval == 0:
 412                                 self.PingConsole = None
 413                                 statecallback(self.NetworkState)
 414                         else:
 415                                 self.NetworkState += 1
 416                                 if len(self.PingConsole.appContainers) == 0:
 417                                         statecallback(self.NetworkState)
 418
 419         def restartNetwork(self,callback = None):
 420                 self.restartConsole = Console()
 421                 self.commands = []
 422                 self.commands.append("/etc/init.d/avahi-daemon stop")
 423                 for iface in self.ifaces.keys():
 424                         cmd = "ip addr flush " + iface
 425                         self.commands.append(cmd)
 426                 self.commands.append("/etc/init.d/networking stop")
 427                 self.commands.append("killall -9 udhcpc")
 428                 self.commands.append("rm /var/run/udhcpc*")
 429                 self.commands.append("/etc/init.d/networking start")
 430                 self.commands.append("/etc/init.d/avahi-daemon start")
 431                 self.restartConsole.eBatch(self.commands, self.restartNetworkFinished, callback, debug=True)
 432
 433         def restartNetworkFinished(self,extra_args):
 434                 ( callback ) = extra_args
 435                 if callback is not None:
 436                         callback(True)
 437
 438         def getLinkState(self,iface,callback):
 439                 cmd = self.ethtool_bin + " " + iface
 440                 self.LinkConsole = Console()
 441                 self.LinkConsole.ePopen(cmd, self.getLinkStateFinished,callback)
 442
 443         def getLinkStateFinished(self, result, retval,extra_args):
 444                 (callback) = extra_args
 445                 if self.LinkConsole is not None:
 446                         if len(self.LinkConsole.appContainers) == 0:
 447                                 callback(result)
 448
 449         def stopLinkStateConsole(self):
 450                 if self.LinkConsole is not None:
 451                         self.LinkConsole = None
 452
 453         def stopDNSConsole(self):
 454                 if self.DnsConsole is not None:
 455                         self.DnsConsole = None
 456
 457         def stopRestartConsole(self):
 458                 if self.restartConsole is not None:
 459                         self.restartConsole = None
 460
 461         def stopGetInterfacesConsole(self):
 462                 if self.Console is not None:
 463                         self.Console = None
 464
 465         def stopDeactivateInterfaceConsole(self):
 466                 if self.deactivateInterfaceConsole:
 467                         self.deactivateInterfaceConsole = None
 468
 469         def checkforInterface(self,iface):
 470                 if self.getAdapterAttribute(iface, 'up') is True:
 471                         return True
 472                 else:
 473                         ret=system("ifconfig " + iface + " up")
 474                         system("ifconfig " + iface + " down")
 475                         if ret == 0:
 476                                 return True
 477                         else:
 478                                 return False
 479
 480         def checkDNSLookup(self,statecallback):
 481                 cmd1 = "nslookup www.dream-multimedia-tv.de"
 482                 cmd2 = "nslookup www.heise.de"
 483                 cmd3 = "nslookup www.google.de"
 484                 self.DnsConsole = Console()
 485                 self.DnsConsole.ePopen(cmd1, self.checkDNSLookupFinished,statecallback)
 486                 self.DnsConsole.ePopen(cmd2, self.checkDNSLookupFinished,statecallback)
 487                 self.DnsConsole.ePopen(cmd3, self.checkDNSLookupFinished,statecallback)
 488
 489         def checkDNSLookupFinished(self, result, retval,extra_args):
 490                 (statecallback) = extra_args
 491                 if self.DnsConsole is not None:
 492                         if retval == 0:
 493                                 self.DnsConsole = None
 494                                 statecallback(self.DnsState)
 495                         else:
 496                                 self.DnsState += 1
 497                                 if len(self.DnsConsole.appContainers) == 0:
 498                                         statecallback(self.DnsState)
 499
 500         def deactivateInterface(self,iface,callback = None):
 501                 self.deactivateInterfaceConsole = Console()
 502                 self.commands = []
 503                 cmd1 = "ip addr flush " + iface
 504                 cmd2 = "ifconfig " + iface + " down"
 505                 self.commands.append(cmd1)
 506                 self.commands.append(cmd2)
 507                 self.deactivateInterfaceConsole.eBatch(self.commands, self.deactivateInterfaceFinished, callback, debug=True)
 508
 509         def deactivateInterfaceFinished(self,extra_args):
 510                 callback = extra_args
 511                 if self.deactivateInterfaceConsole:
 512                         if len(self.deactivateInterfaceConsole.appContainers) == 0:
 513                                 if callback is not None:
 514                                         callback(True)
 515
 516         def detectWlanModule(self):
 517                 self.wlanmodule = None
 518                 rt73_dir = "/sys/bus/usb/drivers/rt73/"
 519                 zd1211b_dir = "/sys/bus/usb/drivers/zd1211b/"
 520                 madwifi_dir = "/sys/bus/pci/drivers/ath_pci/"
 521                 if os_path.exists(madwifi_dir):
 522                         files = listdir(madwifi_dir)
 523                         if len(files) >= 1:
 524                                 self.wlanmodule = 'madwifi'
 525                 if os_path.exists(rt73_dir):
 526                         rtfiles = listdir(rt73_dir)
 527                         if len(rtfiles) == 2:
 528                                 self.wlanmodule = 'ralink'
 529                 if os_path.exists(zd1211b_dir):
 530                         zdfiles = listdir(zd1211b_dir)
 531                         if len(zdfiles) == 1:
 532                                 self.wlanmodule = 'zydas'
 533                 return self.wlanmodule
 534
 535         def calc_netmask(self,nmask):
 536                 from struct import pack, unpack
 537                 from socket import inet_ntoa, inet_aton
 538                 mask = 1L<<31
 539                 xnet = (1L<<32)-1
 540                 cidr_range = range(0, 32)
 541                 cidr = long(nmask)
 542                 if cidr not in cidr_range:
 543                         print 'cidr invalid: %d' % cidr
 544                         return None
 545                 else:
 546                         nm = ((1L<<cidr)-1)<<(32-cidr)
 547                         netmask = str(inet_ntoa(pack('>L', nm)))
 548                         return netmask
 549
 550 iNetwork = Network()
 551
 552 def InitNetwork():
 553         pass