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# ether.py - lookup functions for ethernet addresses
#
# Copyright (C) 2010 Arthur de Jong
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
import constants
import common
import struct
import ldap.filter
def ether_aton(ether):
return struct.pack('BBBBBB', *(int(x, 16) for x in ether.split(':')))
def ether_ntoa(ether):
return ':'.join('%x' % x for x in struct.unpack('6B', ether))
class EtherRequest(common.Request):
filter = '(objectClass=ieee802Device)'
attmap_cn = 'cn'
attmap_macAddress = 'macAddress'
attributes = ( 'cn', 'macAddress' )
def __init__(self, *args):
super(EtherRequest, self).__init__(*args)
self.ether = None
def write(self, entry):
dn, attributes = entry
# get name and check against requested user name
names = attributes.get(self.attmap_cn, [])
if not names:
print 'Error: entry %s does not contain %s value' % ( dn, self.attmap_cn)
if self.name:
if self.name.lower() not in (x.lower() for x in names):
return # skip entry
names = ( self.name, )
# get addresses and convert to binary form
addresses = [ether_aton(x) for x in attributes.get(self.attmap_macAddress, [])]
if not addresses:
print 'Error: entry %s does not contain %s value' % ( dn, self.attmap_macAddress)
if self.ether:
if self.ether not in addresses:
return
addresses = ( self.ether, )
# write results
for name in names:
for ether in addresses:
self.fp.write_int32(constants.NSLCD_RESULT_BEGIN)
self.fp.write_string(name)
self.fp.write(ether)
class EtherByNameRequest(EtherRequest):
action = constants.NSLCD_ACTION_ETHER_BYNAME
def read_parameters(self):
self.name = self.fp.read_string()
def mk_filter(self):
return '(&%s(%s=%s))' % ( self.filter,
self.attmap_cn, ldap.filter.escape_filter_chars(self.name) )
class EtherByEtherRequest(EtherRequest):
action = constants.NSLCD_ACTION_ETHER_BYETHER
def read_parameters(self):
self.ether = self.fp.read(6)
def mk_filter(self):
return '(&%s(%s=%s))' % ( self.filter,
self.attmap_macAddress, ether_ntoa(self.ether) )
class EtherAllRequest(EtherRequest):
action = constants.NSLCD_ACTION_ETHER_ALL
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