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# $Id$
"""
Copyright (C) 2010 SPARTA, Inc. dba Cobham Analytic Solutions
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND SPARTA DISCLAIMS ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS. IN NO EVENT SHALL SPARTA BE LIABLE FOR ANY SPECIAL, DIRECT,
INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
"""
import socket
from django.db import models
from django.contrib.auth.models import User
from rpkigui.myrpki.misc import str_to_range
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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