lib/python/Components/Network.py

   1 import os
   2 import re
   3 from socket import *
   4 from enigma import eTimer, eConsoleAppContainer
   5
   6 class Network:
   7         def __init__(self):
   8                 self.ifaces = {}
   9                 self.configuredInterfaces = {}
  10                 self.nameservers = []
  11                 self.getInterfaces()
  12                 self.ethtool_bin = "/usr/sbin/ethtool"
  13                 self.container = eConsoleAppContainer()
  14
  15         def getInterfaces(self):
  16                 devicesPattern = re.compile('[a-z]+[0-9]+')
  17
  18                 fp = file('/proc/net/dev', 'r')
  19                 result = fp.readlines()
  20                 fp.close()
  21                 for line in result:
  22                         try:
  23                                 device = devicesPattern.search(line).group()
  24                                 self.ifaces[device] = self.getDataForInterface(device)
  25                                 # Show only UP Interfaces in E2
  26                                 if self.getAdapterAttribute(device, 'up') is False:
  27                                         del self.ifaces[device]
  28                         except AttributeError:
  29                                 pass
  30
  31                 print "self.ifaces:", self.ifaces
  32                 self.loadNetworkConfig()
  33                 #self.writeNetworkConfig()
  34                 #print ord(' ')
  35                 #for line in result:
  36                 #       print ord(line[0])
  37
  38         # helper function
  39         def regExpMatch(self, pattern, string):
  40                 if string is None:
  41                         return None
  42                 try:
  43                         return pattern.search(string).group()
  44                 except AttributeError:
  45                         None
  46
  47         # helper function to convert ips from a sring to a list of ints
  48         def convertIP(self, ip):
  49                 strIP = ip.split('.')
  50                 ip = []
  51                 for x in strIP:
  52                         ip.append(int(x))
  53                 return ip
  54
  55         def getDataForInterface(self, iface):
  56                 #ipRegexp = '[0-9]{1,2,3}\.[0-9]{1,2,3}\.[0-9]{1,2,3}\.[0-9]{1,2,3}'
  57                 ipRegexp = '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
  58                 ipLinePattern = re.compile('inet addr:' + ipRegexp)
  59                 netmaskLinePattern = re.compile('Mask:' + ipRegexp)
  60                 bcastLinePattern = re.compile('Bcast:' + ipRegexp)
  61                 ipPattern = re.compile(ipRegexp)
  62                 upPattern = re.compile('UP ')
  63                 macPattern = re.compile('[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}')
  64
  65                 fp = os.popen("ifconfig " + iface)
  66                 result = fp.readlines()
  67                 fp.close()
  68                 data = { 'up': False, 'dhcp': False }
  69                 for line in result:
  70                         ip = self.regExpMatch(ipPattern, self.regExpMatch(ipLinePattern, line))
  71                         netmask = self.regExpMatch(ipPattern, self.regExpMatch(netmaskLinePattern, line))
  72                         bcast = self.regExpMatch(ipPattern, self.regExpMatch(bcastLinePattern, line))
  73                         up = self.regExpMatch(upPattern, line)
  74                         mac = self.regExpMatch(macPattern, line)
  75                         if ip is not None:
  76                                 data['ip'] = self.convertIP(ip)
  77                         if netmask is not None:
  78                                 data['netmask'] = self.convertIP(netmask)
  79                         if bcast is not None:
  80                                 data['bcast'] = self.convertIP(bcast)
  81                         if up is not None:
  82                                 data['up'] = True
  83                         if mac is not None:
  84                                 data['mac'] = mac
  85                 if not data.has_key('ip'):
  86                         data['dhcp'] = True
  87                         data['ip'] = [192, 168, 1, 2]
  88                         data['netmask'] = [255, 255, 255, 0]
  89                         data['gateway'] = [192, 168, 1, 1]
  90
  91                 fp = os.popen("route -n | grep  " + iface)
  92                 result = fp.readlines()
  93                 fp.close()
  94                 for line in result:
  95                         print line[0:7]
  96                         if line[0:7] == "0.0.0.0":
  97                                 gateway = self.regExpMatch(ipPattern, line[16:31])
  98                                 if gateway is not None:
  99                                         data['gateway'] = self.convertIP(gateway)
 100                 return data
 101
 102         def writeNetworkConfig(self):
 103                 fp = file('/etc/network/interfaces', 'w')
 104                 fp.write("# automatically generated by enigma 2\n# do NOT change manually!\n\n")
 105                 fp.write("auto lo\n")
 106                 fp.write("iface lo inet loopback\n\n")
 107
 108                 for ifacename, iface in self.ifaces.items():
 109                         if iface['up'] == True:
 110                                 fp.write("auto " + ifacename + "\n")
 111                         if iface['dhcp'] == True:
 112                                 fp.write("iface "+ ifacename +" inet dhcp\n")
 113                         else:
 114                                 fp.write("iface "+ ifacename +" inet static\n")
 115                                 if iface.has_key('ip'):
 116                                         print tuple(iface['ip'])
 117                                         fp.write("      address %d.%d.%d.%d\n" % tuple(iface['ip']))
 118                                         fp.write("      netmask %d.%d.%d.%d\n" % tuple(iface['netmask']))
 119                                         if iface.has_key('gateway'):
 120                                                 fp.write("      gateway %d.%d.%d.%d\n" % tuple(iface['gateway']))
 121
 122                         if iface.has_key("configStrings"):
 123                                 fp.write("\n" + iface["configStrings"] + "\n")
 124                         fp.write("\n")
 125                 fp.close()
 126                 self.writeNameserverConfig()
 127
 128         def writeNameserverConfig(self):
 129                 fp = file('/etc/resolv.conf', 'w')
 130                 for nameserver in self.nameservers:
 131                         fp.write("nameserver %d.%d.%d.%d\n" % tuple(nameserver))
 132                 fp.close()
 133
 134         def loadNetworkConfig(self):
 135                 self.loadNameserverConfig()
 136                 interfaces = []
 137                 # parse the interfaces-file
 138                 try:
 139                         fp = file('/etc/network/interfaces', 'r')
 140                         interfaces = fp.readlines()
 141                         fp.close()
 142                 except:
 143                         print "[Network.py] interfaces - opening failed"
 144
 145                 ifaces = {}
 146                 currif = ""
 147                 for i in interfaces:
 148                         split = i.strip().split(' ')
 149                         if (split[0] == "iface"):
 150                                 currif = split[1]
 151                                 ifaces[currif] = {}
 152                                 if (len(split) == 4 and split[3] == "dhcp"):
 153                                         ifaces[currif]["dhcp"] = True
 154                                 else:
 155                                         ifaces[currif]["dhcp"] = False
 156                         if (currif != ""):
 157                                 if (split[0] == "address"):
 158                                         ifaces[currif]["address"] = map(int, split[1].split('.'))
 159                                 if (split[0] == "netmask"):
 160                                         ifaces[currif]["netmask"] = map(int, split[1].split('.'))
 161                                 if (split[0] == "gateway"):
 162                                         ifaces[currif]["gateway"] = map(int, split[1].split('.'))
 163
 164                 self.configuredInterfaces = ifaces
 165                 print "read interfaces:", ifaces
 166                 for ifacename, iface in ifaces.items():
 167                         if self.ifaces.has_key(ifacename):
 168                                 self.ifaces[ifacename]["dhcp"] = iface["dhcp"]
 169
 170                 print "self.ifaces after loading:", self.ifaces
 171
 172         def loadNameserverConfig(self):
 173                 ipRegexp = "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
 174                 nameserverPattern = re.compile("nameserver +" + ipRegexp)
 175                 ipPattern = re.compile(ipRegexp)
 176
 177                 resolv = []
 178                 try:
 179                         fp = file('/etc/resolv.conf', 'r')
 180                         resolv = fp.readlines()
 181                         fp.close()
 182                         self.nameservers = []
 183                 except:
 184                         print "[Network.py] resolv.conf - opening failed"
 185
 186                 for line in resolv:
 187                         if self.regExpMatch(nameserverPattern, line) is not None:
 188                                 ip = self.regExpMatch(ipPattern, line)
 189                                 if ip is not None:
 190                                         self.nameservers.append(self.convertIP(ip))
 191
 192                 print "nameservers:", self.nameservers
 193
 194         def deactivateNetworkConfig(self):
 195                 for iface in self.ifaces.keys():
 196                         os.system("ip addr flush " + iface)
 197                 os.system("/etc/init.d/networking stop")
 198                 os.system("killall -9 udhcpc")
 199                 os.system("rm /var/run/udhcpc*")
 200
 201         def activateNetworkConfig(self):
 202                 os.system("/etc/init.d/networking start")
 203                 self.getInterfaces()
 204
 205         def getNumberOfAdapters(self):
 206                 return len(self.ifaces)
 207
 208         def getFriendlyAdapterName(self, x):
 209                 # maybe this needs to be replaced by an external list.
 210                 friendlyNames = {
 211                         "eth0": _("Integrated Ethernet"),
 212                         "wlan0": _("Wireless")
 213                 }
 214                 return friendlyNames.get(x, x) # when we have no friendly name, use adapter name
 215
 216         def getAdapterName(self, iface):
 217                 return iface
 218
 219         def getAdapterList(self):
 220                 return self.ifaces.keys()
 221
 222         def getAdapterAttribute(self, iface, attribute):
 223                 if self.ifaces.has_key(iface):
 224                         if self.ifaces[iface].has_key(attribute):
 225                                 return self.ifaces[iface][attribute]
 226                 return None
 227
 228         def setAdapterAttribute(self, iface, attribute, value):
 229                 print "setting for adapter", iface, "attribute", attribute, " to value", value
 230                 if self.ifaces.has_key(iface):
 231                         self.ifaces[iface][attribute] = value
 232
 233         def removeAdapterAttribute(self, iface, attribute):
 234                 if self.ifaces.has_key(iface):
 235                         if self.ifaces[iface].has_key(attribute):
 236                                 del self.ifaces[iface][attribute]
 237
 238         def getNameserverList(self):
 239                 if len(self.nameservers) == 0:
 240                         return [[0, 0, 0, 0], [0, 0, 0, 0]]
 241                 else:
 242                         return self.nameservers
 243
 244         def clearNameservers(self):
 245                 self.nameservers = []
 246
 247         def addNameserver(self, nameserver):
 248                 if nameserver not in self.nameservers:
 249                         self.nameservers.append(nameserver)
 250
 251         def removeNameserver(self, nameserver):
 252                 if nameserver in self.nameservers:
 253                         self.nameservers.remove(nameserver)
 254
 255         def changeNameserver(self, oldnameserver, newnameserver):
 256                 if oldnameserver in self.nameservers:
 257                         for i in range(len(self.nameservers)):
 258                                 if self.nameservers[i] == oldnameserver:
 259                                         self.nameservers[i] = newnameserver
 260
 261         def writeDefaultNetworkConfig(self,mode='lan'):
 262                 fp = file('/etc/network/interfaces', 'w')
 263                 fp.write("# automatically generated by enigma 2\n# do NOT change manually!\n\n")
 264                 fp.write("auto lo\n")
 265                 fp.write("iface lo inet loopback\n\n")
 266                 if mode == 'wlan':
 267                         fp.write("auto wlan0\n")
 268                         fp.write("iface wlan0 inet dhcp\n")
 269                 else:
 270                         fp.write("auto eth0\n")
 271                         fp.write("iface eth0 inet dhcp\n")
 272                 fp.write("\n")
 273                 fp.close()
 274
 275         def resetNetworkConfig(self,mode='lan'):
 276                 self.deactivateNetworkConfig()
 277                 self.writeDefaultNetworkConfig(mode)
 278                 if mode == 'wlan':
 279                         os.system("ifconfig eth0 down")
 280                         os.system("ifconfig wlan0 up")
 281                 else:
 282                         os.system("ifconfig eth0 up")
 283                         os.system("ifconfig wlan0 down")
 284
 285         def checkNetworkState(self):
 286                 ok_counter = 0
 287                 ret1=os.system("ping -c 1 www.dream-multimedia-tv.de")
 288                 if ret1 != 0:
 289                         ok_counter = ok_counter + 1
 290                 ret2=os.system("ping -c 1 www.heise.de")
 291                 if ret2 != 0:
 292                         ok_counter = ok_counter + 1
 293                 ret3=os.system("ping -c 1 www.google.de")
 294                 if ret2 != 0:
 295                         ok_counter = ok_counter + 1
 296                 if ok_counter <= 2:
 297                         return True
 298                 else:
 299                         return False
 300
 301         def restartNetwork(self):
 302                 iNetwork.deactivateNetworkConfig()
 303                 iNetwork.activateNetworkConfig()
 304
 305         def getLinkState(self,iface,callback):
 306                 self.dataAvail = callback
 307                 cmd = self.ethtool_bin + " " + iface
 308                 self.container.appClosed.get().append(self.cmdFinished)
 309                 self.container.dataAvail.get().append(callback)
 310                 self.container.execute(cmd)
 311
 312         def cmdFinished(self,retval):
 313                 self.container.appClosed.get().remove(self.cmdFinished)
 314                 self.container.dataAvail.get().remove(self.dataAvail)
 315
 316         def checkforInterface(self,iface):
 317                 ret=os.system("ifconfig " + iface + " up")
 318                 if ret == 0:
 319                         return True
 320                 else:
 321                         return False
 322
 323         def checkDNSLookup(self):
 324                 ok_counter = 0
 325                 ret1=os.system("nslookup www.dream-multimedia-tv.de")
 326                 if ret1 != 0:
 327                         ok_counter = ok_counter + 1
 328                 ret2=os.system("nslookup www.heise.de")
 329                 if ret2 != 0:
 330                         ok_counter = ok_counter + 1
 331                 ret3=os.system("nslookup www.google.de")
 332                 if ret2 != 0:
 333                         ok_counter = ok_counter + 1
 334                 if ok_counter <= 2:
 335                         return True
 336                 else:
 337                         return False
 338
 339 iNetwork = Network()
 340
 341 def InitNetwork():
 342         pass