194 lines
7.1 KiB
Python
194 lines
7.1 KiB
Python
from django.db import models
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from django.utils.translation import ugettext_lazy as _
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from orchestra.core import services
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from orchestra.core.validators import (validate_ipv4_address, validate_ipv6_address,
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validate_hostname, validate_ascii)
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from orchestra.utils.python import AttrDict
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from . import settings, validators, utils
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class Domain(models.Model):
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name = models.CharField(_("name"), max_length=256, unique=True,
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validators=[validate_hostname, validators.validate_allowed_domain])
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account = models.ForeignKey('accounts.Account', verbose_name=_("Account"),
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related_name='domains', blank=True, help_text=_("Automatically selected for subdomains"))
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top = models.ForeignKey('domains.Domain', null=True, related_name='subdomains')
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serial = models.IntegerField(_("serial"), default=utils.generate_zone_serial,
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help_text=_("Serial number"))
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def __unicode__(self):
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return self.name
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@property
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def origin(self):
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return self.top or self
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@property
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def is_top(self):
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# don't cache, don't replace by top_id
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return not bool(self.top)
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def get_records(self):
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""" proxy method, needed for input validation, see helpers.domain_for_validation """
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return self.records.all()
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def get_subdomains(self):
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""" proxy method, needed for input validation, see helpers.domain_for_validation """
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return self.origin.subdomains.all()
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def get_top(self):
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split = self.name.split('.')
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top = None
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for i in range(1, len(split)-1):
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name = '.'.join(split[i:])
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domain = Domain.objects.filter(name=name)
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if domain:
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top = domain.get()
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return top
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def render_zone(self):
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origin = self.origin
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zone = origin.render_records()
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for subdomain in origin.get_subdomains():
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zone += subdomain.render_records()
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return zone
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def refresh_serial(self):
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""" Increases the domain serial number by one """
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serial = utils.generate_zone_serial()
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if serial <= self.serial:
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num = int(str(self.serial)[8:]) + 1
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if num >= 99:
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raise ValueError('No more serial numbers for today')
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serial = str(self.serial)[:8] + '%.2d' % num
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serial = int(serial)
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self.serial = serial
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self.save(update_fields=['serial'])
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def render_records(self):
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types = {}
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records = []
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for record in self.get_records():
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types[record.type] = True
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if record.type == record.SOA:
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# Update serial and insert at 0
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value = record.value.split()
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value[2] = str(self.serial)
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records.insert(0,
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AttrDict(type=record.SOA, ttl=record.get_ttl(), value=' '.join(value))
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)
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else:
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records.append(
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AttrDict(type=record.type, ttl=record.get_ttl(), value=record.value)
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)
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if self.is_top:
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if Record.NS not in types:
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for ns in settings.DOMAINS_DEFAULT_NS:
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records.append(AttrDict(type=Record.NS, value=ns))
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if Record.SOA not in types:
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soa = [
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"%s." % settings.DOMAINS_DEFAULT_NAME_SERVER,
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utils.format_hostmaster(settings.DOMAINS_DEFAULT_HOSTMASTER),
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str(self.serial),
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settings.DOMAINS_DEFAULT_REFRESH,
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settings.DOMAINS_DEFAULT_RETRY,
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settings.DOMAINS_DEFAULT_EXPIRATION,
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settings.DOMAINS_DEFAULT_MIN_CACHING_TIME
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]
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records.insert(0, AttrDict(type=Record.SOA, value=' '.join(soa)))
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is_a = not types or Record.A in types or Record.AAAA in types
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if Record.MX not in types and is_a:
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for mx in settings.DOMAINS_DEFAULT_MX:
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records.append(AttrDict(type=Record.MX, value=mx))
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if (Record.A not in types and Record.AAAA not in types) and is_a:
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records.append(AttrDict(type=Record.A, value=settings.DOMAINS_DEFAULT_A))
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result = ''
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for record in records:
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name = '{name}.{spaces}'.format(
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name=self.name, spaces=' ' * (37-len(self.name))
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)
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ttl = record.get('ttl', settings.DOMAINS_DEFAULT_TTL)
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ttl = '{spaces}{ttl}'.format(
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spaces=' ' * (7-len(ttl)), ttl=ttl
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)
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type = '{type} {spaces}'.format(
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type=record.type, spaces=' ' * (7-len(record.type))
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)
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result += '{name} {ttl} IN {type} {value}\n'.format(
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name=name, ttl=ttl, type=type, value=record.value
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)
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return result
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def save(self, *args, **kwargs):
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""" create top relation """
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update = False
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if not self.pk:
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top = self.get_top()
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if top:
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self.top = top
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self.account_id = self.account_id or top.account_id
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else:
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update = True
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super(Domain, self).save(*args, **kwargs)
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if update:
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domains = Domain.objects.exclude(pk=self.pk)
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for domain in domains.filter(name__endswith=self.name):
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domain.top = self
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domain.save(update_fields=['top'])
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self.subdomains.update(account_id=self.account_id)
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class Record(models.Model):
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""" Represents a domain resource record """
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MX = 'MX'
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NS = 'NS'
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CNAME = 'CNAME'
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A = 'A'
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AAAA = 'AAAA'
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SRV = 'SRV'
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TXT = 'TXT'
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SOA = 'SOA'
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TYPE_CHOICES = (
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(MX, "MX"),
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(NS, "NS"),
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(CNAME, "CNAME"),
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(A, _("A (IPv4 address)")),
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(AAAA, _("AAAA (IPv6 address)")),
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(SRV, "SRV"),
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(TXT, "TXT"),
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(SOA, "SOA"),
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)
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domain = models.ForeignKey(Domain, verbose_name=_("domain"), related_name='records')
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ttl = models.CharField(_("TTL"), max_length=8, blank=True,
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help_text=_("Record TTL, defaults to %s") % settings.DOMAINS_DEFAULT_TTL,
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validators=[validators.validate_zone_interval])
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type = models.CharField(_("type"), max_length=32, choices=TYPE_CHOICES)
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value = models.CharField(_("value"), max_length=256)
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def __unicode__(self):
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return "%s %s IN %s %s" % (self.domain, self.get_ttl(), self.type, self.value)
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def clean(self):
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""" validates record value based on its type """
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# validate value
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mapp = {
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self.MX: validators.validate_mx_record,
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self.NS: validators.validate_zone_label,
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self.A: validate_ipv4_address,
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self.AAAA: validate_ipv6_address,
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self.CNAME: validators.validate_zone_label,
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self.TXT: validate_ascii,
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self.SRV: validators.validate_srv_record,
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self.SOA: validators.validate_soa_record,
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}
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mapp[self.type](self.value)
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def get_ttl(self):
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return self.ttl or settings.DOMAINS_DEFAULT_TTL
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services.register(Domain)
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