routerbox/utils/he_ipv6/tunnel.py
2020-05-15 01:45:52 -04:00

172 lines
4.8 KiB
Python

import ipaddress
##
import netaddr
from pyroute2 import IPRoute
##
from . import utils
from . import radvd
class IP(object):
type = None
version = None
_ip = ipaddress.ip_address
_net = ipaddress.ip_network
_net_ip = netaddr.IPAddress
_net_net = netaddr.IPNetwork
def __init__(self, ip, prefix, *args, **kwargs):
self.str = ip
self.prefix = int(prefix)
self.net_ip = self._net_ip(self.str)
self.net_net = self._net_net('{0}/{1}'.format(self.str, self.prefix))
def _ext_init(self):
self.ip = self._ip(self.str)
self.net = self._net('{0}/{1}'.format(self.str, self.prefix), strict = False)
return(None)
class IP4(IP):
type = 'IPv4'
version = 4
_ip = ipaddress.IPv4Address
_net = ipaddress.IPv4Network
def __init__(self, ip, prefix, *args, **kwargs):
super().__init__(ip, prefix, *args, **kwargs)
self._ext_init()
class IP6(IP):
type = 'IPv6'
version = 6
_ip = ipaddress.IPv6Address
_net = ipaddress.IPv6Network
def __init__(self, ip, prefix, *args, **kwargs):
super().__init__(ip, prefix, *args, **kwargs)
self._ext_init()
self.alloc_block = netaddr.SubnetSplitter(self.net_net)
class Assignment(object):
def __init__(self, assign_xml, radvd = False, dns = False):
self.xml = assign_xml
self.do_radvd = radvd
self.radvd_dns = dns
self.iface = None
self.iface_idx = None
self.iface_addrs = []
self.iface_blocks = []
self.alloc = None # This must be set externally to a mapped Allocation instance
self.alloc_id = None
self.prefix = None
self.alloc_block = None
self.parse()
def _alloc(self):
self.alloc_id = int(self.xml.attrib['alloc'].strip())
return(None)
def _iface(self):
_iface_txt = self.xml.attrib['iface'].strip()
self.iface = _iface_txt.strip()
ipr = IPRoute()
self.iface_idx = ipr.link_lookup(ifname = self.iface)[0]
ipr.close()
return(None)
def _prefix(self):
self.prefix = int(self.xml.attrib.get('prefix', 64).strip())
return(None)
def parse(self):
self._iface()
self._alloc()
self._prefix()
return(None)
def parse_alloc(self):
self.alloc_block = self.alloc.ip.alloc_block
self.iface_blocks = self.alloc_block.extract_subnet(self.prefix, count = 1)
for i in self.iface_blocks:
self.iface_addrs.append(IP6(str(next(i.iter_hosts())), 128))
return(None)
class Allocation(object):
def __init__(self, alloc_net):
_ip, _prefix = alloc_net.split('/')
self.id = int(_prefix.strip())
self.prefix = self.id
self.ip = IP6(_ip.strip(), self.prefix)
class Tunnel(object):
def __init__(self, tun_xml, he_tunnel, creds):
self.xml = tun_xml
self.creds = creds
self.he = he_tunnel
self.update_key = self.he.creds.password
self.id = None
self.client = None
self.server = None
self.endpoint = None
self.radvd = None
self.enable_radvd = None
self.radvd_dns = None
self.allocations = {} # This is a dict of {}[alloc.id] = Allocation obj
self.assignments = [] # This is a list of Assignment objs
self.parse()
def _allocations(self):
self.allocations = self.he.allocations
return(None)
def _assignments(self):
_assigns_xml = self.xml.find('assignments')
self.enable_radvd = utils.xml2bool(_assigns_xml.attrib.get('radvd', 'false'))
self.radvd_dns = utils.xml2bool(_assigns_xml.attrib.get('radvdDns', 'false'))
for _assign_xml in _assigns_xml.findall('assign'):
assign = Assignment(_assign_xml, radvd = self.enable_radvd, dns = self.radvd_dns)
assign.alloc = self.allocations[assign.alloc_id]
assign.parse_alloc()
self.assignments.append(assign)
return(None)
def _client(self):
self.client = self.he.client
return(None)
def _creds(self):
self.creds_id = self.xml.attrib['creds'].strip()
return(None)
def _endpoint(self):
self.endpoint = self.he.endpoint
return(None)
def _id(self):
self.id = int(self.xml.attrib['id'].strip())
return(None)
def _radvd(self):
self.radvd = radvd.RADVD()
self.radvd.conf.generate(self.assignments)
return(None)
def _server(self):
self.server = self.he.server
return(None)
def parse(self):
self._id()
self._creds()
self._client()
self._server()
self._allocations()
self._assignments()
self._radvd()
return(None)