123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112 |
- # pydhcplib
- # Copyright (C) 2008 Mathieu Ignacio -- mignacio@april.org
- #
- # This file is part of pydhcplib.
- # Pydhcplib is free software; you can redistribute it and/or modify
- # it under the terms of the GNU General Public License as published by
- # the Free Software Foundation; either version 3 of the License, or
- # (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-
- # Check and convert ipv4 address type
- class ipv4:
- def __init__(self,value="0.0.0.0") :
- ip_type = type(value)
- if ip_type == str :
- if not self.CheckString(value) : raise ValueError, "ipv4 string argument is not an valid ip "
- self._ip_string = value
- self._StringToNumlist()
- self._StringToLong()
- self._NumlistToString()
- elif ip_type == list :
- if not self.CheckNumList(value) : raise ValueError, "ipv4 list argument is not an valid ip "
- self._ip_numlist = value
- self._NumlistToString()
- self._StringToLong()
- elif ip_type == int or ip_type == long:
- self._ip_long = value
- self._LongToNumlist()
- self._NumlistToString()
- elif ip_type == bool :
- self._ip_long = 0
- self._LongToNumlist()
- self._NumlistToString()
-
- else : raise TypeError , 'ipv4 init : Valid types are str, list, int or long'
-
- # Convert Long type ip to numlist ip
- def _LongToNumlist(self) :
- self._ip_numlist = [self._ip_long >> 24 & 0xFF]
- self._ip_numlist.append(self._ip_long >> 16 & 0xFF)
- self._ip_numlist.append(self._ip_long >> 8 & 0xFF)
- self._ip_numlist.append(self._ip_long & 0xFF)
- if not self.CheckNumList(self._ip_numlist) : raise ValueError, "ipv4 list argument is not an valid ip "
- # Convert String type ip to Long type ip
- def _StringToLong(self) :
- ip_numlist = map(int,self._ip_string.split('.'))
- self._ip_long = ip_numlist[3] + ip_numlist[2]*256 + ip_numlist[1]*256*256 + ip_numlist[0]*256*256*256
- if not self.CheckNumList(self._ip_numlist) : raise ValueError, "ipv4 list argument is not an valid ip "
- # Convert NumList type ip to String type ip
- def _NumlistToString(self) :
- self._ip_string = ".".join(map(str,self._ip_numlist))
- if not self.CheckNumList(self._ip_numlist) : raise ValueError, "ipv4 list argument is not an valid ip "
- # Convert String type ip to NumList type ip
- def _StringToNumlist(self) :
- self._ip_numlist = map(int,self._ip_string.split('.'))
- if not self.CheckNumList(self._ip_numlist) : raise ValueError, "ipv4 list argument is not an valid ip "
-
- """ Public methods """
- # Check if _ip_numlist is valid and raise error if not.
- # self._ip_numlist
- def CheckNumList(self,value) :
- if len(value) != 4 : return False
- for part in value :
- if part < 0 or part > 255 : return False
- return True
-
- # Check if _ip_numlist is valid and raise error if not.
- def CheckString(self,value) :
- tmp = value.strip().split('.')
- if len(tmp) != 4 : return False
- for each in tmp :
- if not each.isdigit() : return False
- return True
-
- # return ip string
- def str(self) :
- return self._ip_string
-
- # return ip list (useful for DhcpPacket class)
- def list(self) :
- return self._ip_numlist
-
- # return Long ip type (useful for SQL ip address backend)
- def int(self) :
- return self._ip_long
-
-
- """ Useful function for native python operations """
-
- def __hash__(self) :
- return self._ip_long.__hash__()
-
- def __repr__(self) :
- return self._ip_string
-
- def __cmp__(self,other) :
- return cmp(self._ip_long, other._ip_long);
-
- def __nonzero__(self) :
- if self._ip_long != 0 : return 1
- return 0
-
-
|