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# $Id$
import socket
from django.db import models
from django.contrib.auth.models import User
from rpkigui.myrpki.misc import str_to_range, str_to_addr
import rpki.resource_set
import rpki.exceptions
class HandleField(models.CharField):
def __init__(self, **kwargs):
models.CharField.__init__(self, max_length=255, **kwargs)
class IPAddressField(models.CharField):
def __init__( self, **kwargs ):
models.CharField.__init__(self, max_length=40, **kwargs)
class Conf(models.Model):
'''This is the center of the universe, also known as a place to
have a handle on a resource-holding entity. It's the <self>
in the rpkid schema.'''
handle = HandleField(unique=True, db_index=True)
owner = models.ManyToManyField(User)
def __unicode__(self):
return self.handle
class AddressRange(models.Model):
'''An address range/prefix.'''
lo = IPAddressField(blank=False)
hi = IPAddressField(blank=False)
# parent address range
parent = models.ForeignKey('AddressRange', related_name='children',
blank=True, null=True)
# child to which this resource is delegated
allocated = models.ForeignKey('Child', related_name='address_range',
blank=True, null=True)
def __unicode__(self):
if self.lo == self.hi:
return u"%s" % (self.lo,)
try:
# pretty print cidr
return unicode(self.as_resource_range())
except socket.error, err:
print err
# work around for bug when hi/lo get reversed
except AssertionError, err:
print err
return u'%s - %s' % (self.lo, self.hi)
def get_absolute_url(self):
return u'/myrpki/address/%d' % (self.pk,)
def as_resource_range(self):
'''Convert to rpki.resource_set.resource_range_ip.'''
return str_to_range(self.lo, self.hi)
def is_prefix(self):
'''Returns True if this address range can be represented as a
prefix.'''
try:
self.as_resource_range()._prefixlen()
except rpki.exceptions.MustBePrefix, err:
print err
return False
return True
class RoaRequest(models.Model):
roa = models.ForeignKey('Roa', related_name='from_roa_request')
max_length = models.IntegerField()
prefix = models.ForeignKey('AddressRange', related_name='roa_requests')
def __unicode__(self):
return u'roa request for asn %d on %s-%d' % (self.roa.asn, self.prefix,
self.max_length)
def as_roa_prefix(self):
'''Convert to a rpki.resouce_set.roa_prefix subclass.'''
r = self.prefix.as_resource_range()
if isinstance(r, rpki.resource_set.resource_set_ipv4):
return rpki.resource_set.roa_prefix_ipv4(r.min, r._prefixlen(),
self.max_length)
else:
return rpki.resource_set.roa_prefix_ipv6(r.min, r._prefixlen(),
self.max_length)
def get_absolute_url(self):
return u'/myrpki/roa/%d' % (self.pk,)
class Asn(models.Model):
'''An ASN or range thereof.'''
lo = models.IntegerField(blank=False)
hi = models.IntegerField(blank=False)
# parent asn range
parent = models.ForeignKey('Asn', related_name='children',
blank=True, null=True)
# child to which this resource is delegated
allocated = models.ForeignKey('Child', related_name='asn',
blank=True, null=True)
def __unicode__(self):
if self.lo == self.hi:
return u"ASN %d" % (self.lo,)
else:
return u"ASNs %d - %d" % (self.lo, self.hi)
def get_absolute_url(self):
return u'/myrpki/asn/%d' % (self.pk,)
class Child(models.Model):
conf = models.ForeignKey(Conf, related_name='children')
handle = HandleField() # parent's name for child
def __unicode__(self):
return u"%s's child %s" % (self.conf, self.handle)
def get_absolute_url(self):
return u'/myrpki/child/%s' % (self.handle,)
class Meta:
verbose_name_plural = "children"
# children of a specific configuration should be unique
unique_together = ('conf', 'handle')
class Parent(models.Model):
conf = models.ForeignKey(Conf, related_name='parents')
handle = HandleField() # my name for this parent
def __unicode__(self):
return u"%s's parent %s" % (self.conf, self.handle)
def get_absolute_url(self):
return u'/myrpki/parent/%s' % (self.handle,)
class Meta:
# parents of a specific configuration should be unique
unique_together = ('conf', 'handle')
class ResourceCert(models.Model):
parent = models.ForeignKey(Parent, related_name='resources')
# resources granted from my parent
asn = models.ManyToManyField(Asn, related_name='from_cert', blank=True,
null=True)
address_range = models.ManyToManyField(AddressRange,
related_name='from_cert', blank=True, null=True)
# unique id for this resource certificate
# FIXME: URLField(verify_exists=False) doesn't seem to work - the admin
# editor won't accept a rsync:// scheme as valid
uri = models.CharField(max_length=200)
# certificate validity period
not_before = models.DateTimeField()
not_after = models.DateTimeField()
def get_absolute_url(self):
return u"/myrpki/resource/%d" % (self.pk,)
def __unicode__(self):
return u"%s's resource cert from parent %s" % (self.parent.conf.handle,
self.parent.handle)
class Roa(models.Model):
'''Maps an ASN to the set of prefixes it can originate routes for.
This differs from a real ROA in that prefixes from multiple
parents/resource certs can be selected. The glue module contains
code to split the ROAs into groups by common resource certs.'''
conf = models.ForeignKey(Conf, related_name='roas')
asn = models.IntegerField()
active = models.BooleanField()
def __unicode__(self):
return u"%s's ROA for %d" % (self.conf, self.asn)
# vim:sw=4 ts=8 expandtab
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