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"""
A Cobbler repesentation of an IP network.
Copyright 2009, Red Hat, Inc
John Eckersberg <jeckersb@redhat.com>
This program 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 2 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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA
"""
import utils
import item
from cexceptions import *
from utils import _, _IP, _CIDR
class Network(item.Item):
TYPE_NAME = _("network")
COLLECTION_TYPE = "network"
def make_clone(self):
ds = self.to_datastruct()
cloned = Network(self.config)
cloned.from_datastruct(ds)
return cloned
def clear(self,is_subobject=False):
self.name = None
self.cidr = None
self.address = None
self.gateway = None
self.broadcast = None
self.nameservers = []
self.reserved = []
self.used_addresses = []
self.free_addresses = []
self.comment = ""
def from_datastruct(self,seed_data):
self.name = self.load_item(seed_data, 'name')
self.cidr = _CIDR(self.load_item(seed_data, 'cidr'))
self.address = _IP(self.load_item(seed_data, 'address', self.cidr[0]))
self.gateway = _IP(self.load_item(seed_data, 'gateway', self.cidr[-2]))
self.broadcast = _IP(self.load_item(seed_data, 'broadcast', self.cidr[-1]))
self.nameservers = [_IP(i) for i in self.load_item(seed_data, 'nameservers', [])]
self.reserved = [_CIDR(c) for c in self.load_item(seed_data, 'reserved', [])]
self.used_addresses = [_IP(i) for i in self.load_item(seed_data, 'used_addresses', [])]
self.free_addresses = [_CIDR(c) for c in self.load_item(seed_data, 'free_addresses', [])]
self.comment = self.load_item(seed_data, 'comment', '')
return self
def set_cidr(self, cidr):
self.cidr = _CIDR(cidr)
def set_address(self, address):
self.address = _IP(address)
def set_gateway(self, gateway):
self.gateway = _IP(gateway)
def set_broadcast(self, broadcast):
self.broadcast = _IP(broadcast)
def set_nameservers(self, nameservers):
nameservers = [s.strip() for s in nameservers.split(',')]
self.nameservers = [_IP(i) for i in nameservers]
def set_reserved(self, reserved):
reserved = [s.strip() for s in reserved.split(',')]
self.reserved = [_CIDR(c) for c in reserved]
# def set_used_addresses(self, used_addresses):
# pass
# def set_free_addresses(self, free_addresses):
# pass
def take_new_address(self, address):
pass
def free_address(self, address):
pass
def subtract_and_flatten(self, cidr_list, remove_list):
for item in remove_list:
for i in range(len(cidr_list)):
if item in cidr_list[i]:
cidr_list += cidr_list[i] - item
del(cidr_list[i])
break
return cidr_list
def update_free(self):
free = [self.cidr]
#remove all the taken addresses
self.free_addresses = self.subtract_and_flatten(free,
self.reserved +
self.used_addresses +
[self.address] +
[self.gateway] +
[self.broadcast])
def used_address_count(self):
return len(self.used_addresses)
def free_address_count(self):
for a in self.free_addresses:
print type(a)
total = 0
for item in self.free_addresses:
total += len(item)
return total
def is_valid(self):
"""
A network is valid if it has a name and a CIDR
"""
if self.name is None:
raise CX(_("name is required"))
if self.cidr is None:
raise CX(_("cidr is required"))
return True
def to_datastruct(self):
return {
'name' : self.name,
'cidr' : self.cidr,
'address' : self.address,
'gateway' : self.gateway,
'broadcast' : self.broadcast,
'nameservers' : self.nameservers,
'reserved' : self.reserved,
'used_addresses' : self.used_addresses,
'free_addresses' : self.free_addresses,
'comment' : self.comment
}
def printable(self):
buf = _("network : %s\n") % self.name
buf = buf + _("CIDR : %s\n") % self.cidr
buf = buf + _("gateway : %s\n") % self.gateway
buf = buf + _("network address : %s\n") % self.address
buf = buf + _("broadcast : %s\n") % self.broadcast
buf = buf + _("nameservers : %s\n") % [str(i) for i in self.nameservers]
buf = buf + _("reserved : %s\n") % [str(i) for i in self.reserved]
buf = buf + _("free addresses : %s\n") % self.free_address_count()
buf = buf + _("used addresses : %s\n") % self.used_address_count()
buf = buf + _("comment : %s\n") % self.comment
return buf
def get_parent(self):
"""
currently the Cobbler object space does not support subobjects of this object
as it is conceptually not useful.
"""
return None
def remote_methods(self):
return {
'name' : self.set_name,
'cidr' : self.set_cidr,
'address' : self.set_address,
'gateway' : self.set_gateway,
'broadcast' : self.set_broadcast,
'nameservers' : self.set_nameservers,
'reserved' : self.set_reserved,
'used_addresses' : self.set_used_addresses,
'free_addresses' : self.set_free_addresses,
'comment' : self.set_comment
}
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