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modoboa/modoboa/admin/models/domain.py
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Python

"""Models related to domains management."""
import datetime
from reversion import revisions as reversion
from django.core.management import call_command
from django.db import models
from django.utils import timezone
from django.utils.encoding import force_str, smart_str
from django.utils.functional import cached_property
from django.utils.translation import gettext as _, gettext_lazy
import django_rq
from modoboa.core import signals as core_signals
from modoboa.core.models import User
from modoboa.lib.exceptions import BadRequest, Conflict
from modoboa.parameters import tools as param_tools
from .. import constants
from .base import AdminObject
from . import mixins
class Domain(mixins.MessageLimitMixin, AdminObject):
"""Mail domain."""
name = models.CharField(
gettext_lazy("name"),
max_length=253,
unique=True,
help_text=gettext_lazy("The domain name"),
)
quota = models.PositiveIntegerField(
default=0,
)
default_mailbox_quota = models.PositiveIntegerField(
verbose_name=gettext_lazy("Default mailbox quota"), default=0
)
message_limit = models.PositiveIntegerField(
gettext_lazy("Message sending limit"),
null=True,
blank=True,
help_text=gettext_lazy("Number of messages this domain can send per day"),
)
enabled = models.BooleanField(
gettext_lazy("enabled"),
help_text=gettext_lazy("Check to activate this domain"),
default=True,
)
type = models.CharField(default="domain", max_length=20) # NOQA:A003
enable_dns_checks = models.BooleanField(
gettext_lazy("Enable DNS checks"),
default=True,
help_text=gettext_lazy("Check to enable DNS checks for this domain"),
)
last_dns_check_execution = models.DateTimeField(null=True, blank=True)
transport = models.OneToOneField(
"transport.Transport", null=True, on_delete=models.SET_NULL
)
enable_dkim = models.BooleanField(
gettext_lazy("Enable DKIM signing"),
help_text=gettext_lazy(
"If you activate this feature, a DKIM key will be "
"generated for this domain."
),
default=False,
)
dkim_key_selector = models.CharField(max_length=30, default="modoboa")
dkim_key_length = models.PositiveIntegerField(
gettext_lazy("Key length"),
choices=constants.DKIM_KEY_LENGTHS,
blank=True,
null=True,
)
dkim_public_key = models.TextField(blank=True)
dkim_private_key_path = models.CharField(max_length=254, blank=True)
class Meta:
ordering = ["name"]
app_label = "admin"
def __init__(self, *args, **kwargs):
"""Save name for further use."""
super().__init__(*args, **kwargs)
self.old_mail_homes = None
self.oldname = self.name
self.old_dkim_key_length = self.dkim_key_length
@property
def domainalias_count(self) -> int:
return self.domainalias_set.count()
@property
def mailbox_count(self) -> int:
return self.mailbox_set.count()
@property
def mbalias_count(self) -> int:
return self.alias_set.filter(internal=False).count()
@property
def identities_count(self) -> int:
"""Total number of identities in this domain."""
return self.mailbox_set.count() + self.alias_set.filter(internal=False).count()
@property
def opened_alarms_count(self) -> int:
"""Number of alarms currently opened for this domain."""
return self.alarms.opened().count()
@property
def admins(self):
"""Return the domain administrators of this domain.
:return: a list of User objects
"""
return User.objects.filter(
is_superuser=False,
objectaccess__content_type__model="domain",
objectaccess__object_id=self.pk,
)
@property
def aliases(self):
return self.domainalias_set
@property
def uses_a_reserved_tld(self):
"""Does this domain use a reserved TLD."""
tld = self.name.split(".", 1)[-1]
return tld in constants.RESERVED_TLD
@property
def just_created(self):
"""Return true if the domain was created in the latest 24h."""
now = timezone.now()
delta = datetime.timedelta(days=1)
return self.creation + delta > now
def awaiting_checks(self):
"""Return true if the domain has no valid MX record and was created
in the latest 24h."""
if (not self.mxrecord_set.has_valids()) and self.just_created:
return True
return False
@property
def dns_global_status(self) -> str:
"""Return global DNS status."""
if not self.enable_dns_checks or self.uses_a_reserved_tld:
return "disabled"
elif self.awaiting_checks():
return "pending"
config = dict(param_tools.get_global_parameters("admin"))
errors = []
if config["enable_mx_checks"] and not self.mxrecord_set.has_valids():
errors.append("mx")
if (
config["enable_dnsbl_checks"]
and self.dnsblresult_set.blacklisted().exists()
):
errors.append("dnsbl")
if config["enable_spf_checks"]:
if self.spf_record is None or not self.spf_record.is_valid:
errors.append("spf")
if self.dkim_record is None or not self.dkim_record.is_valid:
errors.append("dkim")
if self.dmarc_record is None or not self.dmarc_record.is_valid:
errors.append("dmarc")
if config["enable_autoconfig_checks"]:
if self.autoconfig_record is None:
errors.append("autoconfig")
if self.autodiscover_record is None:
errors.append("autodiscover")
if len(errors) == 0:
return "ok"
return "critical"
@property
def spf_record(self):
"""Return SPF record."""
return self.dnsrecord_set.filter(type="spf").first()
@property
def dkim_record(self):
"""Return DKIM record."""
return self.dnsrecord_set.filter(type="dkim").first()
@property
def dmarc_record(self):
"""Return DMARC record."""
return self.dnsrecord_set.filter(type="dmarc").first()
@property
def autoconfig_record(self):
"""Return autoconfig record."""
return self.dnsrecord_set.filter(type="autoconfig").first()
@property
def autodiscover_record(self):
"""Return autodiscover record."""
return self.dnsrecord_set.filter(type="autodiscover").first()
@cached_property
def allocated_quota(self) -> int:
"""Return current quota allocation."""
if not self.quota:
return 0
if not self.mailbox_set.exists():
return 0
return self.mailbox_set.aggregate(total=models.Sum("quota"))["total"]
@cached_property
def allocated_quota_in_percent(self):
"""Return allocated quota in percent."""
if not self.allocated_quota:
return 0
return int(self.allocated_quota / float(self.quota) * 100)
@cached_property
def used_quota(self):
"""Return current quota usage."""
from .mailbox import Quota
if not self.quota:
return 0
if not self.mailbox_set.exists():
return 0
return int(Quota.objects.get_domain_usage(self) / 1048576)
@cached_property
def used_quota_in_percent(self):
"""Return used quota in percent."""
if not self.allocated_quota:
return 0
return int(self.used_quota / float(self.quota) * 100)
@property
def message_counter_key(self):
"""Return the key used to store messages count."""
return self.name
def add_admin(self, account):
"""Add a new administrator to this domain.
:param User account: the administrator
"""
from modoboa.lib.permissions import grant_access_to_object
# Check if domain's limit for domain admins is not reached yet
core_signals.can_create_object.send(
sender=self.__class__, context=self, object_type="domain_admins"
)
grant_access_to_object(account, self)
for mb in self.mailbox_set.all():
if mb.user.has_perm("admin.add_domain"):
continue
grant_access_to_object(account, mb)
grant_access_to_object(account, mb.user)
for al in self.alias_set.filter(internal=False):
grant_access_to_object(account, al)
def remove_admin(self, account):
"""Remove an administrator of this domain.
:param User account: administrator to remove
"""
from modoboa.lib.permissions import ungrant_access_to_object
ungrant_access_to_object(self, account)
for mb in self.mailbox_set.all():
if mb.user.has_perm("admin.add_domain"):
continue
ungrant_access_to_object(mb, account)
ungrant_access_to_object(mb.user, account)
for al in self.alias_set.all():
ungrant_access_to_object(al, account)
def save(self, *args, **kwargs):
"""Store current data if domain is renamed."""
# We check that the instance exists to use m2m relationship
if self.pk and self.oldname != self.name:
self.old_mail_homes = {mb.id: mb.mail_home for mb in self.mailbox_set.all()}
if self.old_dkim_key_length != self.dkim_key_length:
self.dkim_public_key = ""
self.dkim_private_key_path = ""
super().save(*args, **kwargs)
def delete(self, fromuser, keepdir=False):
"""Custom delete method."""
from modoboa.lib.permissions import ungrant_access_to_objects
from .mailbox import Quota
if self.domainalias_set.count():
ungrant_access_to_objects(self.domainalias_set.all())
if self.alias_set.count():
ungrant_access_to_objects(self.alias_set.all())
if param_tools.get_global_parameter("auto_account_removal"):
User.objects.filter(mailbox__domain=self).delete()
elif self.mailbox_set.count():
Quota.objects.filter(username__contains=f"@{self.name}").delete()
ungrant_access_to_objects(self.mailbox_set.all())
super().delete()
def __str__(self):
return smart_str(self.name)
def generate_dkim_key(self):
"""Launch domain key creation."""
queue = django_rq.get_queue("dkim")
queue.enqueue(call_command, "modo", "manage_dkim_keys", f"--domain={self.name}")
def from_csv(self, user, row):
"""Create a new domain from a CSV entry.
The expected fields order is the following::
"domain", name, quota, default_mailbox_quota, enabled
:param ``core.User`` user: user creating the domain
:param str row: a list containing domain's definition
"""
from .. import lib
if len(row) < 5:
raise BadRequest(_("Invalid line"))
self.name = row[1].strip().lower()
if Domain.objects.filter(name=self.name).exists():
raise Conflict
domains_must_have_authorized_mx = param_tools.get_global_parameter(
"domains_must_have_authorized_mx"
)
if domains_must_have_authorized_mx and not user.is_superuser:
if not lib.domain_has_authorized_mx(self.name):
raise BadRequest(
_("{}: no authorized MX record found for domain").format(self.name)
)
try:
self.quota = int(row[2].strip())
except ValueError:
raise BadRequest(
_("{}: invalid quota value for domain").format(self.name)
) from None
try:
self.default_mailbox_quota = int(row[3].strip())
except ValueError:
raise BadRequest(
_("{}: invalid default mailbox quota value for domain").format(
self.name
)
) from None
if self.quota != 0 and self.default_mailbox_quota > self.quota:
raise BadRequest(
_(
"{}: default mailbox quota cannot be greater than domain " "quota"
).format(self.name)
)
self.enabled = row[4].strip().lower() in ["true", "1", "yes", "y"]
core_signals.can_create_object.send(
sender=self.__class__, context=user, klass=Domain, instance=self
)
self.save(creator=user)
def to_csv_rows(self):
"""Return a row to include in a CSV file."""
result = [
[
"domain",
force_str(self.name),
self.quota,
self.default_mailbox_quota,
self.enabled,
]
]
for dalias in self.domainalias_set.all():
result.append(dalias.to_csv_row())
return result
def to_csv(self, csvwriter):
"""Export domain and domain aliases to CSV format."""
for row in self.to_csv_rows():
csvwriter.writerow(row)
def post_create(self, creator):
"""Post creation actions.
:param ``User`` creator: user whos created this domain
"""
super().post_create(creator)
for domalias in self.domainalias_set.all():
domalias.post_create(creator)
reversion.register(Domain)