dnmgmt/domains/models.py

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from django.db import models
from django.urls import reverse
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from whoisdb.models import MntdObject, WhoisObject, Contact, InetNum
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import ipaddress
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# generally allow domains for .dn to be created
# allow owners of a subnet to create reverse dns record?
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class Nameserver(MntdObject):
handleSuffix = "NS"
# dns name
# ip address, if glue
# ipv4/ipv6 address?
handle = None
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name = models.CharField(max_length=256)
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glueIPv4 = models.GenericIPAddressField(protocol='IPv4', blank=True, null=True)
glueIPv6 = models.GenericIPAddressField(protocol='IPv6', blank=True, null=True)
admin_c = models.ManyToManyField(Contact)
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def getPK(self):
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return self.pk
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def get_absolute_url(self):
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return reverse("domains:nameserver-show", args=(self.pk,))
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def __str__(self):
return self.name
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def getNoDeleteReasons(self):
# nameservers can always be deleted
return []
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class Domain(MntdObject):
handle = None
handleSuffix = "DOM"
name = models.CharField(max_length=67, unique=True, db_index=True)
nameservers = models.ManyToManyField(Nameserver, blank=True)
admin_c = models.ManyToManyField(Contact)
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def getPK(self):
return self.name
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def get_absolute_url(self):
return reverse("domains:domain-show", args=(self.name,))
def __str__(self):
return self.name
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def getNoDeleteReasons(self):
reasons = []
nameservers = Nameserver.objects.filter(name__endswith="." + self.name)
for ns in nameservers:
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# FIXME: check if the nameserver has a glue record.... and also if it is maintained by us
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reasons.append("Nameserver %s depends on this domain" % ns.name)
return reasons
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class ReverseZone(WhoisObject):
handle = None
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parentNet = models.ForeignKey(InetNum)
address = models.GenericIPAddressField(db_index=True)
netmask = models.PositiveIntegerField()
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nameservers = models.ManyToManyField(Nameserver)
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def getPK(self):
return self.pk
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def prefix(self):
""" Helper function, mainly used in templates """
return "%s/%s" % (self.address, self.netmask)
def getNetwork(self):
return ipaddress.ip_network(self.prefix())
def get_absolute_url(self):
return reverse("domains:reversezone-show", args=(self.pk,))
def __str__(self):
return "%s @ %s" % (self.prefix(), self.parentNet)
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def getNoDeleteReasons(self):
return []
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def canEdit(self, user):
if self.parentNet:
return self.parentNet.canEdit(user)
else:
return False