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