lib/python/Components/Network.py

   1 import os
   2 import re
   3 from socket import *
   4
   5 class Network:
   6         def __init__(self):
   7                 self.ifaces = {}
   8                 self.nameservers = []
   9                 self.getInterfaces()
  10
  11         def getInterfaces(self):
  12                 devicesPattern = re.compile('[a-z]+[0-9]+')
  13
  14                 fp = file('/proc/net/dev', 'r')
  15                 result = fp.readlines()
  16                 fp.close()
  17                 for line in result:
  18                         try:
  19                                 device = devicesPattern.search(line).group()
  20                                 self.ifaces[device] = self.getDataForInterface(device)
  21                         except AttributeError:
  22                                 pass
  23
  24                 print "self.ifaces:", self.ifaces
  25                 self.loadNetworkConfig()
  26                 #self.writeNetworkConfig()
  27                 #print ord(' ')
  28                 #for line in result:
  29 #                       print ord(line[0])
  30
  31         # helper function
  32         def regExpMatch(self, pattern, string):
  33                 if string is None:
  34                         return None
  35                 try:
  36                         return pattern.search(string).group()
  37                 except AttributeError:
  38                         None
  39
  40         # helper function to convert ips from a sring to a list of ints
  41         def convertIP(self, ip):
  42                 strIP = ip.split('.')
  43                 ip = []
  44                 for x in strIP:
  45                         ip.append(int(x))
  46                 return ip
  47
  48         def getDataForInterface(self, iface):
  49                 #ipRegexp = '[0-9]{1,2,3}\.[0-9]{1,2,3}\.[0-9]{1,2,3}\.[0-9]{1,2,3}'
  50                 ipRegexp = '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
  51                 ipLinePattern = re.compile('inet addr:' + ipRegexp)
  52                 netmaskLinePattern = re.compile('Mask:' + ipRegexp)
  53                 bcastLinePattern = re.compile('Bcast:' + ipRegexp)
  54                 ipPattern = re.compile(ipRegexp)
  55                 upPattern = re.compile('UP ')
  56                 macPattern = re.compile('[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}\:[0-9]{2}')
  57
  58                 fp = os.popen("ifconfig " + iface)
  59                 result = fp.readlines()
  60                 fp.close()
  61                 data = { 'up': False, 'dhcp': False }
  62                 for line in result:
  63                         ip = self.regExpMatch(ipPattern, self.regExpMatch(ipLinePattern, line))
  64                         netmask = self.regExpMatch(ipPattern, self.regExpMatch(netmaskLinePattern, line))
  65                         bcast = self.regExpMatch(ipPattern, self.regExpMatch(bcastLinePattern, line))
  66                         up = self.regExpMatch(upPattern, line)
  67                         mac = self.regExpMatch(macPattern, line)
  68                         if ip is not None:
  69                                 data['ip'] = self.convertIP(ip)
  70                         if netmask is not None:
  71                                 data['netmask'] = self.convertIP(netmask)
  72                         if bcast is not None:
  73                                 data['bcast'] = self.convertIP(bcast)
  74                         if up is not None:
  75                                 data['up'] = True
  76                         if mac is not None:
  77                                 data['mac'] = mac
  78                 if not data.has_key('ip'):
  79                         data['dhcp'] = True
  80                         data['ip'] = [192, 168, 1, 2]
  81                         data['netmask'] = [255, 255, 255, 0]
  82                         data['gateway'] = [192, 168, 1, 1]
  83
  84                 fp = os.popen("route -n | grep  " + iface)
  85                 result = fp.readlines()
  86                 fp.close()
  87                 for line in result:
  88                         print line[0:7]
  89                         if line[0:7] == "0.0.0.0":
  90                                 gateway = self.regExpMatch(ipPattern, line[16:31])
  91                                 if gateway is not None:
  92                                         data['gateway'] = self.convertIP(gateway)
  93                 return data
  94
  95         def writeNetworkConfig(self):
  96                 fp = file('/etc/network/interfaces', 'w')
  97                 fp.write("# automatically generated by enigma 2\n# do NOT change manually!\n\n")
  98                 fp.write("auto lo\n")
  99                 fp.write("iface lo inet loopback\n\n")
 100
 101                 for ifacename, iface in self.ifaces.items():
 102                         if iface['up'] == True:
 103                                 fp.write("auto " + ifacename + "\n")
 104                         if iface['dhcp'] == True:
 105                                 fp.write("iface "+ ifacename +" inet dhcp\n")
 106                         else:
 107                                 fp.write("iface "+ ifacename +" inet static\n")
 108                                 if iface.has_key('ip'):
 109                                         print tuple(iface['ip'])
 110                                         fp.write("      address %d.%d.%d.%d\n" % tuple(iface['ip']))
 111                                         fp.write("      netmask %d.%d.%d.%d\n" % tuple(iface['netmask']))
 112                                         if iface.has_key('gateway'):
 113                                                 fp.write("      gateway %d.%d.%d.%d\n" % tuple(iface['gateway']))
 114
 115                         if iface.has_key("configStrings"):
 116                                 fp.write("\n" + iface["configStrings"] + "\n")
 117                         fp.write("\n")
 118                 fp.close()
 119                 self.writeNameserverConfig()
 120
 121
 122         def writeNameserverConfig(self):
 123                 fp = file('/etc/resolv.conf', 'w')
 124                 for nameserver in self.nameservers:
 125                         fp.write("nameserver %d.%d.%d.%d\n" % tuple(nameserver))
 126                 fp.close()
 127
 128
 129         def loadNetworkConfig(self):
 130                 self.loadNameserverConfig()
 131
 132                 interfaces = []
 133                 # parse the interfaces-file
 134                 try:
 135                         fp = file('/etc/network/interfaces', 'r')
 136                         interfaces = fp.readlines()
 137                         fp.close()
 138                 except:
 139                         print "[Network.py] interfaces - opening failed"
 140
 141                 ifaces = {}
 142                 currif = ""
 143                 for i in interfaces:
 144                         split = i.strip().split(' ')
 145                         if (split[0] == "iface"):
 146                                 currif = split[1]
 147                                 ifaces[currif] = {}
 148                                 if (len(split) == 4 and split[3] == "dhcp"):
 149                                         ifaces[currif]["dhcp"] = True
 150                                 else:
 151                                         ifaces[currif]["dhcp"] = False
 152                         if (currif != ""):
 153                                 if (split[0] == "address"):
 154                                         ifaces[currif]["address"] = map(int, split[1].split('.'))
 155                                 if (split[0] == "netmask"):
 156                                         ifaces[currif]["netmask"] = map(int, split[1].split('.'))
 157                                 if (split[0] == "gateway"):
 158                                         ifaces[currif]["gateway"] = map(int, split[1].split('.'))
 159
 160                 print "read interfaces:", ifaces
 161                 for ifacename, iface in ifaces.items():
 162                         if self.ifaces.has_key(ifacename):
 163                                 self.ifaces[ifacename]["dhcp"] = iface["dhcp"]
 164
 165                 print "self.ifaces after loading:", self.ifaces
 166
 167         def loadNameserverConfig(self):
 168                 ipRegexp = "[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}"
 169                 nameserverPattern = re.compile("nameserver +" + ipRegexp)
 170                 ipPattern = re.compile(ipRegexp)
 171
 172                 resolv = []
 173                 try:
 174                         fp = file('/etc/resolv.conf', 'r')
 175                         resolv = fp.readlines()
 176                         fp.close()
 177                         self.nameservers = []
 178                 except:
 179                         print "[Network.py] resolv.conf - opening failed"
 180
 181                 for line in resolv:
 182                         if self.regExpMatch(nameserverPattern, line) is not None:
 183                                 ip = self.regExpMatch(ipPattern, line)
 184                                 if ip is not None:
 185                                         self.nameservers.append(self.convertIP(ip))
 186
 187                 print "nameservers:", self.nameservers
 188
 189         def deactivateNetworkConfig(self):
 190                 for iface in self.ifaces.keys():
 191                         os.system("ip addr flush " + iface)
 192                 os.system("/etc/init.d/networking stop")
 193                 os.system("killall -9 udhcpc")
 194                 os.system("rm /var/run/udhcpc*")
 195
 196         def activateNetworkConfig(self):
 197                 os.system("/etc/init.d/networking start")
 198
 199         def getNumberOfAdapters(self):
 200                 return len(self.ifaces)
 201
 202         def getAdapterName(self, iface):
 203                 return iface
 204
 205         def getAdapterList(self):
 206                 return self.ifaces.keys()
 207
 208         def getAdapterAttribute(self, iface, attribute):
 209                 if self.ifaces.has_key(iface):
 210                         if self.ifaces[iface].has_key(attribute):
 211                                 return self.ifaces[iface][attribute]
 212                 return None
 213
 214         def setAdapterAttribute(self, iface, attribute, value):
 215                 print "setting for adapter", iface, "attribute", attribute, " to value", value
 216                 if self.ifaces.has_key(iface):
 217                         self.ifaces[iface][attribute] = value
 218
 219         def removeAdapterAttribute(self, iface, attribute):
 220                 if self.ifaces.has_key(iface):
 221                         if self.ifaces[iface].has_key(attribute):
 222                                 del self.ifaces[iface][attribute]
 223
 224         def getNameserverList(self):
 225                 return self.nameservers
 226
 227         def clearNameservers(self):
 228                 self.nameservers = []
 229
 230         def addNameserver(self, nameserver):
 231                 if nameserver not in self.nameservers:
 232                         self.nameservers.append(nameserver)
 233
 234         def removeNameserver(self, nameserver):
 235                 if nameserver in self.nameservers:
 236                         self.nameservers.remove(nameserver)
 237
 238         def changeNameserver(self, oldnameserver, newnameserver):
 239                 if oldnameserver in self.nameservers:
 240                         for i in range(len(self.nameservers)):
 241                                 if self.nameservers[i] == oldnameserver:
 242                                         self.nameservers[i] = newnameserver
 243
 244 iNetwork = Network()
 245
 246 def InitNetwork():
 247         pass