# $Id$
#
# Copyright (C) 2013--2014 Dragon Research Labs ("DRL")
# Portions copyright (C) 2011--2012 Internet Systems Consortium ("ISC")
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notices and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND DRL AND ISC DISCLAIM ALL
# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL DRL OR
# ISC 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.
"""
Internet Registry (IR) Database, Django-style.
This is the back-end code's interface to the database. It's intended
to be usable by command line programs and other scripts, not just
Django GUI code, so be careful.
"""
# pylint: disable=W0232,C1001
import django.db.models
import rpki.x509
import rpki.sundial
import rpki.resource_set
import socket
import rpki.POW
from south.modelsinspector import add_introspection_rules
## @var ip_version_choices
# Choice argument for fields implementing IP version numbers.
ip_version_choices = ((4, "IPv4"), (6, "IPv6"))
## @var ca_certificate_lifetime
# Lifetime for a BPKI CA certificate.
ca_certificate_lifetime = rpki.sundial.timedelta(days = 3652)
## @var crl_interval
# Expected interval between BPKI CRL updates. This should be a little
# longer than the real regeneration cycle, so that the old CRL will
# not go stale while we're generating the new one. Eg, if we
# regenerate daily, an interval of 24 hours is too short, but 25 hours
# would be OK, as would 24 hours and 30 minutes.
crl_interval = rpki.sundial.timedelta(hours = 25)
## @var ee_certificate_lifetime
# Lifetime for a BPKI EE certificate.
ee_certificate_lifetime = rpki.sundial.timedelta(days = 60)
###
# Field types
class HandleField(django.db.models.CharField):
"""
A handle field type.
"""
description = 'A "handle" in one of the RPKI protocols'
def __init__(self, *args, **kwargs):
kwargs["max_length"] = 120
django.db.models.CharField.__init__(self, *args, **kwargs)
class EnumField(django.db.models.PositiveSmallIntegerField):
"""
An enumeration type that uses strings in Python and small integers
in SQL.
"""
description = "An enumeration type"
__metaclass__ = django.db.models.SubfieldBase
def __init__(self, *args, **kwargs):
if isinstance(kwargs.get("choices"), (tuple, list)) and isinstance(kwargs["choices"][0], str):
kwargs["choices"] = tuple(enumerate(kwargs["choices"], 1))
django.db.models.PositiveSmallIntegerField.__init__(self, *args, **kwargs)
self.enum_i2s = dict(self.flatchoices)
self.enum_s2i = dict((v, k) for k, v in self.flatchoices)
def to_python(self, value):
return self.enum_i2s.get(value, value)
def get_prep_value(self, value):
return self.enum_s2i.get(value, value)
class SundialField(django.db.models.DateTimeField):
"""
A field type for our customized datetime objects.
"""
__metaclass__ = django.db.models.SubfieldBas