# -*- mode: python; coding: utf-8 -*-
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2016-2018 Gabriel Détraz
# Copyright © 2017 Goulven Kermarec
# Copyright © 2017 Augustin Lemesle
# Copyright © 2018 Charlie Jacomme
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""machines.models
The models definitions for the Machines app
"""
from __future__ import unicode_literals
from datetime import timedelta
import re
from ipaddress import IPv6Address
from itertools import chain
from netaddr import mac_bare, EUI, IPSet, IPRange, IPNetwork, IPAddress
import hashlib
import base64
from django.db import models
from django.db.models import Q
from django.db.models.signals import post_save, post_delete
from django.dispatch import receiver
from django.forms import ValidationError
from django.utils.functional import cached_property
from django.utils import timezone
from django.core.validators import MaxValueValidator, MinValueValidator
from django.utils.translation import ugettext_lazy as _
from macaddress.fields import MACAddressField
from re2o.field_permissions import FieldPermissionModelMixin
from re2o.mixins import AclMixin, RevMixin
import users.models
import preferences.models
class Machine(RevMixin, FieldPermissionModelMixin, models.Model):
""" Class définissant une machine, object parent user, objets fils
interfaces"""
user = models.ForeignKey('users.User', on_delete=models.PROTECT)
name = models.CharField(
max_length=255,
help_text=_("Optional"),
blank=True,
null=True
)
active = models.BooleanField(default=True)
class Meta:
permissions = (
("view_machine", _("Can view a machine object")),
("change_machine_user",
_("Can change the user of a machine")),
)
verbose_name = _("machine")
verbose_name_plural = _("machines")
@classmethod
def get_instance(cls, machineid, *_args, **_kwargs):
"""Get the Machine instance with machineid.
:param userid: The id
:return: The user
"""
return cls.objects.get(pk=machineid)
def linked_objects(self):
"""Return linked objects : machine and domain.
Usefull in history display"""
return chain(
self.interface_set.all(),
Domain.objects.filter(
interface_parent__in=self.interface_set.all()
)
)
@staticmethod
def can_change_user(user_request, *_args, **_kwargs):
"""Checks if an user is allowed to change the user who owns a
Machine.
Args:
user_request: The user requesting to change owner.
Returns:
A tuple with a boolean stating if edition is allowed and an
explanation message.
"""
return (user_request.has_perm('machines.change_machine_user'),
_("You don't have the right to change the machine's user."))
@staticmethod
def can_view_all(user_request, *_args, **_kwargs):
"""Vérifie qu'on peut bien afficher l'ensemble des machines,
droit particulier correspondant
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if not user_request.has_perm('machines.view_machine'):
return False, _("You don't have the right to view all the"
" machines.")
return True, None
@staticmethod
def can_create(user_request, userid, *_args, **_kwargs):
"""Vérifie qu'un user qui fait la requète peut bien créer la machine
et n'a pas atteint son quota, et crée bien une machine à lui
:param user_request: Utilisateur qui fait la requête
:param userid: id de l'user dont on va créer une machine
:return: soit True, soit False avec la raison de l'échec"""
try:
user = users.models.User.objects.get(pk=userid)
except users.models.User.DoesNotExist:
return False, _("Nonexistent user.")
max_lambdauser_interfaces = (preferences.models.OptionalMachine
.get_cached_value(
'max_lambdauser_interfaces'
))
if not user_request.has_perm('machines.add_machine'):
if not (preferences.models.OptionalMachine
.get_cached_value('create_machine')):
return False, (_("You don't have the right to add a machine."))
if user != user_request:
return False, (_("You don't have the right to add a machine"
" to another user."))
if user.user_interfaces().count() >= max_lambdauser_interfaces:
return False, (_("You reached the maximum number of interfaces"
" that you are allowed to create yourself"
" (%s)." % max_lambdauser_interfaces))
return True, None
def can_edit(self, user_request, *args, **kwargs):
"""Vérifie qu'on peut bien éditer cette instance particulière (soit
machine de soi, soit droit particulier
:param self: instance machine à éditer
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison le cas échéant"""
if self.user != user_request:
if (not user_request.has_perm('machines.change_interface') or
not self.user.can_edit(
self.user,
user_request,
*args,
**kwargs
)[0]):
return False, (_("You don't have the right to edit a machine"
" of another user."))
return True, None
def can_delete(self, user_request, *args, **kwargs):
"""Vérifie qu'on peut bien supprimer cette instance particulière (soit
machine de soi, soit droit particulier
:param self: instance machine à supprimer
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if self.user != user_request:
if (not user_request.has_perm('machines.change_interface') or
not self.user.can_edit(
self.user,
user_request,
*args,
**kwargs
)[0]):
return False, _("You don't have the right to delete a machine"
" of another user.")
return True, None
def can_view(self, user_request, *_args, **_kwargs):
"""Vérifie qu'on peut bien voir cette instance particulière (soit
machine de soi, soit droit particulier
:param self: instance machine à éditer
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if (not user_request.has_perm('machines.view_machine') and
self.user != user_request):
return False, _("You don't have the right to view other machines"
" than yours.")
return True, None
@cached_property
def short_name(self):
"""Par defaut, renvoie le nom de la première interface
de cette machine"""
return str(self.interface_set.first().domain.name)
@cached_property
def all_short_names(self):
"""Renvoie de manière unique, le nom des interfaces de cette
machine"""
return Domain.objects.filter(
interface_parent__machine=self
).values_list('name', flat=True).distinct()
@cached_property
def all_complete_names(self):
"""Renvoie tous les tls complets de la machine"""
return [str(domain) for domain in Domain.objects.filter(
Q(cname__interface_parent__machine=self) | Q(interface_parent__machine=self)
)]
def __init__(self, *args, **kwargs):
super(Machine, self).__init__(*args, **kwargs)
self.field_permissions = {
'user': self.can_change_user,
}
def __str__(self):
return str(self.user) + ' - ' + str(self.id) + ' - ' + str(self.name)
class MachineType(RevMixin, AclMixin, models.Model):
""" Type de machine, relié à un type d'ip, affecté aux interfaces"""
type = models.CharField(max_length=255)
ip_type = models.ForeignKey(
'IpType',
on_delete=models.PROTECT,
blank=True,
null=True
)
class Meta:
permissions = (
("view_machinetype", _("Can view a machine type object")),
("use_all_machinetype", _("Can use all machine types")),
)
verbose_name = _("machine type")
verbose_name_plural = _("machine types")
def all_interfaces(self):
""" Renvoie toutes les interfaces (cartes réseaux) de type
machinetype"""
return Interface.objects.filter(type=self)
@staticmethod
def can_use_all(user_request, *_args, **_kwargs):
"""Check if an user can use every MachineType.
Args:
user_request: The user requesting edition.
Returns:
A tuple with a boolean stating if user can acces and an explanation
message is acces is not allowed.
"""
if not user_request.has_perm('machines.use_all_machinetype'):
return False, (_("You don't have the right to use all machine"
" types."))
return True, None
def __str__(self):
return self.type
class IpType(RevMixin, AclMixin, models.Model):
""" Type d'ip, définissant un range d'ip, affecté aux machine types"""
type = models.CharField(max_length=255)
extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
need_infra = models.BooleanField(default=False)
domaine_ip_start = models.GenericIPAddressField(protocol='IPv4')
domaine_ip_stop = models.GenericIPAddressField(protocol='IPv4')
domaine_ip_network = models.GenericIPAddressField(
protocol='IPv4',
null=True,
blank=True,
help_text=_("Network containing the domain's IPv4 range (optional)")
)
domaine_ip_netmask = models.IntegerField(
default=24,
validators=[
MaxValueValidator(31),
MinValueValidator(8)
],
help_text=_("Netmask for the domain's IPv4 range")
)
reverse_v4 = models.BooleanField(
default=False,
help_text=_("Enable reverse DNS for IPv4"),
)
prefix_v6 = models.GenericIPAddressField(
protocol='IPv6',
null=True,
blank=True
)
prefix_v6_length = models.IntegerField(
default=64,
validators=[
MaxValueValidator(128),
MinValueValidator(0)
]
)
reverse_v6 = models.BooleanField(
default=False,
help_text=_("Enable reverse DNS for IPv6"),
)
vlan = models.ForeignKey(
'Vlan',
on_delete=models.PROTECT,
blank=True,
null=True
)
ouverture_ports = models.ForeignKey(
'OuverturePortList',
blank=True,
null=True
)
class Meta:
permissions = (
("view_iptype", _("Can view an IP type object")),
("use_all_iptype", _("Can use all IP types")),
)
verbose_name = _("IP type")
verbose_name_plural = ("IP types")
@cached_property
def ip_range(self):
""" Renvoie un objet IPRange à partir de l'objet IpType"""
return IPRange(self.domaine_ip_start, end=self.domaine_ip_stop)
@cached_property
def ip_set(self):
""" Renvoie une IPSet à partir de l'iptype"""
return IPSet(self.ip_range)
@cached_property
def ip_set_as_str(self):
""" Renvoie une liste des ip en string"""
return [str(x) for x in self.ip_set]
@cached_property
def ip_set_cidrs_as_str(self):
"""Renvoie la liste des cidrs du range en str"""
return [str(ip_range) for ip_range in self.ip_set.iter_cidrs()]
@cached_property
def ip_set_full_info(self):
"""Iter sur les range cidr, et renvoie network, broacast , etc"""
return [
{
'network': str(ip_set.network),
'netmask': str(ip_set.netmask),
'netmask_cidr': str(ip_set.prefixlen),
'broadcast': str(ip_set.broadcast),
'vlan': str(self.vlan),
'vlan_id': self.vlan.vlan_id
} for ip_set in self.ip_set.iter_cidrs()
]
@cached_property
def ip6_set_full_info(self):
if self.prefix_v6:
return {
'network' : str(self.prefix_v6),
'netmask' : 'ffff:ffff:ffff:ffff::',
'netmask_cidr' : str(self.prefix_v6_length),
'vlan': str(self.vlan),
'vlan_id': self.vlan.vlan_id
}
else:
return None
@cached_property
def ip_network(self):
"""Renvoie le network parent du range start-stop, si spécifié
Différent de ip_set_cidrs ou iP_set, car lui est supérieur ou égal"""
if self.domaine_ip_network:
return IPNetwork(str(self.domaine_ip_network) + '/' + str(self.domaine_ip_netmask))
return None
@cached_property
def ip_net_full_info(self):
"""Renvoie les infos du network contenant du range"""
return {
'network' : str(self.ip_network.network),
'netmask' : str(self.ip_network.netmask),
'broadcast' : str(self.ip_network.broadcast),
'netmask_cidr' : str(self.ip_network.prefixlen),
}
@cached_property
def complete_prefixv6(self):
"""Return the complete prefix v6 as cidr"""
return str(self.prefix_v6) + "/" + str(self.prefix_v6_length)
def ip_objects(self):
""" Renvoie tous les objets ipv4 relié à ce type"""
return IpList.objects.filter(ip_type=self)
def free_ip(self):
""" Renvoie toutes les ip libres associées au type donné (self)"""
return IpList.objects.filter(
interface__isnull=True
).filter(ip_type=self)
def gen_ip_range(self):
""" Cree les IpList associées au type self. Parcours pédestrement et
crée les ip une par une. Si elles existent déjà, met à jour le type
associé à l'ip"""
# Creation du range d'ip dans les objets iplist
ip_obj = [IpList(ip_type=self, ipv4=str(ip)) for ip in self.ip_range]
listes_ip = IpList.objects.filter(
ipv4__in=[str(ip) for ip in self.ip_range]
)
# Si il n'y a pas d'ip, on les crée
if not listes_ip:
IpList.objects.bulk_create(ip_obj)
# Sinon on update l'ip_type
else:
listes_ip.update(ip_type=self)
return
def del_ip_range(self):
""" Methode dépréciée, IpList est en mode cascade et supprimé
automatiquement"""
if Interface.objects.filter(ipv4__in=self.ip_objects()):
raise ValidationError(_("One or several IP addresses from the"
" range are affected, impossible to delete"
" the range."))
for ip in self.ip_objects():
ip.delete()
def check_replace_prefixv6(self):
"""Remplace les prefixv6 des interfaces liées à ce type d'ip"""
if not self.prefix_v6:
return
else:
for ipv6 in Ipv6List.objects.filter(
interface__in=Interface.objects.filter(
type__in=MachineType.objects.filter(ip_type=self)
)
):
ipv6.check_and_replace_prefix(prefix=self.prefix_v6)
def get_associated_ptr_records(self):
from re2o.utils import all_active_assigned_interfaces
if self.reverse_v4:
return (all_active_assigned_interfaces()
.filter(type__ip_type=self)
.filter(ipv4__isnull=False))
else:
return None
def get_associated_ptr_v6_records(self):
from re2o.utils import all_active_interfaces
if self.reverse_v6:
return (all_active_interfaces(full=True)
.filter(type__ip_type=self))
else:
return None
def clean(self):
""" Nettoyage. Vérifie :
- Que ip_stop est après ip_start
- Qu'on ne crée pas plus gros qu'un /16
- Que le range crée ne recoupe pas un range existant
- Formate l'ipv6 donnée en /64"""
if IPAddress(self.domaine_ip_start) > IPAddress(self.domaine_ip_stop):
raise ValidationError(_("Range end must be after range start..."))
# On ne crée pas plus grand qu'un /16
if self.ip_range.size > 65536:
raise ValidationError(_("The range is too large, you can't create"
" a larger one than a /16."))
# On check que les / ne se recoupent pas
for element in IpType.objects.all().exclude(pk=self.pk):
if not self.ip_set.isdisjoint(element.ip_set):
raise ValidationError(_("The specified range is not disjoint"
" from existing ranges."))
# On formate le prefix v6
if self.prefix_v6:
self.prefix_v6 = str(IPNetwork(self.prefix_v6 + '/64').network)
# On vérifie qu'un domaine network/netmask contiens bien le domaine ip start-stop
if self.domaine_ip_network:
if not self.domaine_ip_start in self.ip_network or not self.domaine_ip_stop in self.ip_network:
raise ValidationError(_("If you specify a domain network or"
" netmask, it must contain the"
" domain's IP range."))
return
def save(self, *args, **kwargs):
self.clean()
super(IpType, self).save(*args, **kwargs)
@staticmethod
def can_use_all(user_request, *_args, **_kwargs):
"""Superdroit qui permet d'utiliser toutes les extensions sans
restrictions
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
return user_request.has_perm('machines.use_all_iptype'), None
def __str__(self):
return self.type
class Vlan(RevMixin, AclMixin, models.Model):
""" Un vlan : vlan_id et nom
On limite le vlan id entre 0 et 4096, comme défini par la norme"""
vlan_id = models.PositiveIntegerField(validators=[MaxValueValidator(4095)])
name = models.CharField(max_length=256)
comment = models.CharField(max_length=256, blank=True)
class Meta:
permissions = (
("view_vlan", _("Can view a VLAN object")),
)
verbose_name = _("VLAN")
verbose_name_plural = _("VLANs")
def __str__(self):
return self.name
class Nas(RevMixin, AclMixin, models.Model):
""" Les nas. Associé à un machine_type.
Permet aussi de régler le port_access_mode (802.1X ou mac-address) pour
le radius. Champ autocapture de la mac à true ou false"""
default_mode = '802.1X'
AUTH = (
('802.1X', '802.1X'),
('Mac-address', 'Mac-address'),
)
name = models.CharField(max_length=255, unique=True)
nas_type = models.ForeignKey(
'MachineType',
on_delete=models.PROTECT,
related_name='nas_type'
)
machine_type = models.ForeignKey(
'MachineType',
on_delete=models.PROTECT,
related_name='machinetype_on_nas'
)
port_access_mode = models.CharField(
choices=AUTH,
default=default_mode,
max_length=32
)
autocapture_mac = models.BooleanField(default=False)
class Meta:
permissions = (
("view_nas", _("Can view a NAS device object")),
)
verbose_name = _("NAS device")
verbose_name_plural = _("NAS devices")
def __str__(self):
return self.name
class SOA(RevMixin, AclMixin, models.Model):
"""
Un enregistrement SOA associé à une extension
Les valeurs par défault viennent des recommandations RIPE :
https://www.ripe.net/publications/docs/ripe-203
"""
name = models.CharField(max_length=255)
mail = models.EmailField(
help_text=_("Contact email address for the zone")
)
refresh = models.PositiveIntegerField(
default=86400, # 24 hours
help_text=_("Seconds before the secondary DNS have to ask the primary"
" DNS serial to detect a modification")
)
retry = models.PositiveIntegerField(
default=7200, # 2 hours
help_text=_("Seconds before the secondary DNS ask the serial again in"
" case of a primary DNS timeout")
)
expire = models.PositiveIntegerField(
default=3600000, # 1000 hours
help_text=_("Seconds before the secondary DNS stop answering requests"
" in case of primary DNS timeout")
)
ttl = models.PositiveIntegerField(
default=172800, # 2 days
help_text=_("Time to Live")
)
class Meta:
permissions = (
("view_soa", _("Can view an SOA record object")),
)
verbose_name = _("SOA record")
verbose_name_plural = _("SOA records")
def __str__(self):
return str(self.name)
@cached_property
def dns_soa_param(self):
"""
Renvoie la partie de l'enregistrement SOA correspondant aux champs :
<refresh> ; refresh
<retry> ; retry
<expire> ; expire
<ttl> ; TTL
"""
return (
' {refresh}; refresh\n'
' {retry}; retry\n'
' {expire}; expire\n'
' {ttl}; TTL'
).format(
refresh=str(self.refresh).ljust(12),
retry=str(self.retry).ljust(12),
expire=str(self.expire).ljust(12),
ttl=str(self.ttl).ljust(12)
)
@cached_property
def dns_soa_mail(self):
""" Renvoie le mail dans l'enregistrement SOA """
mail_fields = str(self.mail).split('@')
return mail_fields[0].replace('.', '\\.') + '.' + mail_fields[1] + '.'
@classmethod
def new_default_soa(cls):
""" Fonction pour créer un SOA par défaut, utile pour les nouvelles
extensions .
/!\ Ne jamais supprimer ou renommer cette fonction car elle est
utilisée dans les migrations de la BDD. """
return cls.objects.get_or_create(
name=_("SOA to edit"),
mail="postmaser@example.com"
)[0].pk
class Extension(RevMixin, AclMixin, models.Model):
""" Extension dns type example.org. Précise si tout le monde peut
l'utiliser, associé à un origin (ip d'origine)"""
name = models.CharField(
max_length=255,
unique=True,
help_text=_("Zone name, must begin with a dot (.example.org)")
)
need_infra = models.BooleanField(default=False)
origin = models.ForeignKey(
'IpList',
on_delete=models.PROTECT,
blank=True,
null=True,
help_text=_("A record associated with the zone")
)
origin_v6 = models.GenericIPAddressField(
protocol='IPv6',
null=True,
blank=True,
help_text=_("AAAA record associated with the zone")
)
soa = models.ForeignKey(
'SOA',
on_delete=models.CASCADE
)
class Meta:
permissions = (
("view_extension", _("Can view an extension object")),
("use_all_extension", _("Can use all extensions")),
)
verbose_name = _("DNS extension")
verbose_name_plural = _("DNS extensions")
@cached_property
def dns_entry(self):
""" Une entrée DNS A et AAAA sur origin (zone self)"""
entry = ""
if self.origin:
entry += "@ IN A " + str(self.origin)
if self.origin_v6:
if entry:
entry += "\n"
entry += "@ IN AAAA " + str(self.origin_v6)
return entry
def get_associated_sshfp_records(self):
from re2o.utils import all_active_assigned_interfaces
return (all_active_assigned_interfaces()
.filter(type__ip_type__extension=self)
.filter(machine__id__in=SshFp.objects.values('machine')))
def get_associated_a_records(self):
from re2o.utils import all_active_assigned_interfaces
return (all_active_assigned_interfaces()
.filter(type__ip_type__extension=self)
.filter(ipv4__isnull=False))
def get_associated_aaaa_records(self):
from re2o.utils import all_active_interfaces
return (all_active_interfaces(full=True)
.filter(type__ip_type__extension=self))
def get_associated_cname_records(self):
from re2o.utils import all_active_assigned_interfaces
return (Domain.objects
.filter(extension=self)
.filter(cname__interface_parent__in=all_active_assigned_interfaces())
.prefetch_related('cname'))
@staticmethod
def can_use_all(user_request, *_args, **_kwargs):
"""Superdroit qui permet d'utiliser toutes les extensions sans
restrictions
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
return user_request.has_perm('machines.use_all_extension'), None
def __str__(self):
return self.name
def clean(self, *args, **kwargs):
if self.name and self.name[0] != '.':
raise ValidationError(_("An extension must begin with a dot."))
super(Extension, self).clean(*args, **kwargs)
class Mx(RevMixin, AclMixin, models.Model):
""" Entrées des MX. Enregistre la zone (extension) associée et la
priorité
Todo : pouvoir associer un MX à une interface """
zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
priority = models.PositiveIntegerField()
name = models.ForeignKey('Domain', on_delete=models.PROTECT)
class Meta:
permissions = (
("view_mx", _("Can view an MX record object")),
)
verbose_name = _("MX record")
verbose_name_plural = _("MX records")
@cached_property
def dns_entry(self):
"""Renvoie l'entrée DNS complète pour un MX à mettre dans les
fichiers de zones"""
return "@ IN MX {prior} {name}".format(
prior=str(self.priority).ljust(3),
name=str(self.name)
)
def __str__(self):
return str(self.zone) + ' ' + str(self.priority) + ' ' + str(self.name)
class Ns(RevMixin, AclMixin, models.Model):
"""Liste des enregistrements name servers par zone considéérée"""
zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
ns = models.ForeignKey('Domain', on_delete=models.PROTECT)
class Meta:
permissions = (
("view_ns", _("Can view an NS record object")),
)
verbose_name = _("NS record")
verbose_name_plural = _("NS records")
@cached_property
def dns_entry(self):
"""Renvoie un enregistrement NS complet pour les filezones"""
return "@ IN NS " + str(self.ns)
def __str__(self):
return str(self.zone) + ' ' + str(self.ns)
class Txt(RevMixin, AclMixin, models.Model):
""" Un enregistrement TXT associé à une extension"""
zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
field1 = models.CharField(max_length=255)
field2 = models.TextField(max_length=2047)
class Meta:
permissions = (
("view_txt", _("Can view a TXT record object")),
)
verbose_name = _("TXT record")
verbose_name_plural = _("TXT records")
def __str__(self):
return str(self.zone) + " : " + str(self.field1) + " " +\
str(self.field2)
@cached_property
def dns_entry(self):
"""Renvoie l'enregistrement TXT complet pour le fichier de zone"""
return str(self.field1).ljust(15) + " IN TXT " + str(self.field2)
class DName(RevMixin, AclMixin, models.Model):
"""A DNAME entry for the DNS."""
zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
alias = models.CharField(max_length=255)
class Meta:
permissions = (
("view_dname", _("Can view a DNAME record object")),
)
verbose_name = _("DNAME record")
verbose_name_plural = _("DNAME records")
def __str__(self):
return str(self.zone) + " : " + str(self.alias)
@cached_property
def dns_entry(self):
"""Returns the DNAME record for the DNS zone file."""
return str(self.alias).ljust(15) + " IN DNAME " + str(self.zone)
class Srv(RevMixin, AclMixin, models.Model):
""" A SRV record """
TCP = 'TCP'
UDP = 'UDP'
service = models.CharField(max_length=31)
protocole = models.CharField(
max_length=3,
choices=(
(TCP, 'TCP'),
(UDP, 'UDP'),
),
default=TCP,
)
extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
ttl = models.PositiveIntegerField(
default=172800, # 2 days
help_text=_("Time to Live")
)
priority = models.PositiveIntegerField(
default=0,
validators=[MaxValueValidator(65535)],
help_text=_("Priority of the target server (positive integer value,"
" the lower it is, the more the server will be used if"
" available)")
)
weight = models.PositiveIntegerField(
default=0,
validators=[MaxValueValidator(65535)],
help_text=_("Relative weight for records with the same priority"
" (integer value between 0 and 65535)")
)
port = models.PositiveIntegerField(
validators=[MaxValueValidator(65535)],
help_text=_("TCP/UDP port")
)
target = models.ForeignKey(
'Domain',
on_delete=models.PROTECT,
help_text=_("Target server")
)
class Meta:
permissions = (
("view_srv", _("Can view an SRV record object")),
)
verbose_name = _("SRV record")
verbose_name_plural = _("SRV records")
def __str__(self):
return str(self.service) + ' ' + str(self.protocole) + ' ' +\
str(self.extension) + ' ' + str(self.priority) +\
' ' + str(self.weight) + str(self.port) + str(self.target)
@cached_property
def dns_entry(self):
"""Renvoie l'enregistrement SRV complet pour le fichier de zone"""
return str(self.service) + '._' + str(self.protocole).lower() +\
str(self.extension) + '. ' + str(self.ttl) + ' IN SRV ' +\
str(self.priority) + ' ' + str(self.weight) + ' ' +\
str(self.port) + ' ' + str(self.target) + '.'
class SshFp(RevMixin, AclMixin, models.Model):
"""A fingerprint of an SSH public key"""
ALGO = (
("ssh-rsa", "ssh-rsa"),
("ssh-ed25519", "ssh-ed25519"),
("ecdsa-sha2-nistp256", "ecdsa-sha2-nistp256"),
("ecdsa-sha2-nistp384", "ecdsa-sha2-nistp384"),
("ecdsa-sha2-nistp521", "ecdsa-sha2-nistp521"),
)
machine = models.ForeignKey('Machine', on_delete=models.CASCADE)
pub_key_entry = models.TextField(
help_text="SSH public key",
max_length=2048
)
algo = models.CharField(
choices=ALGO,
max_length=32
)
comment = models.CharField(
help_text="Comment",
max_length=255,
null=True,
blank=True
)
@cached_property
def algo_id(self):
"""Return the id of the algorithm for this key"""
if "ecdsa" in self.algo:
return 3
elif "rsa" in self.algo:
return 1
else:
return 2
@cached_property
def hash(self):
"""Return the hashess for the pub key with correct id
cf RFC, 1 is sha1 , 2 sha256"""
return {
"1" : hashlib.sha1(base64.b64decode(self.pub_key_entry)).hexdigest(),
"2" : hashlib.sha256(base64.b64decode(self.pub_key_entry)).hexdigest(),
}
class Meta:
permissions = (
("view_sshfp", _("Can view an SSHFP record object")),
)
verbose_name = _("SSHFP record")
verbose_name_plural = _("SSHFP records")
def can_view(self, user_request, *_args, **_kwargs):
return self.machine.can_view(user_request, *_args, **_kwargs)
def can_edit(self, user_request, *args, **kwargs):
return self.machine.can_edit(user_request, *args, **kwargs)
def can_delete(self, user_request, *args, **kwargs):
return self.machine.can_delete(user_request, *args, **kwargs)
def __str__(self):
return str(self.algo) + ' ' + str(self.comment)
class Interface(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
""" Une interface. Objet clef de l'application machine :
- une address mac unique. Possibilité de la rendre unique avec le
typemachine
- une onetoone vers IpList pour attribution ipv4
- le type parent associé au range ip et à l'extension
- un objet domain associé contenant son nom
- la liste des ports oiuvert"""
ipv4 = models.OneToOneField(
'IpList',
on_delete=models.PROTECT,
blank=True,
null=True
)
mac_address = MACAddressField(integer=False)
machine = models.ForeignKey('Machine', on_delete=models.CASCADE)
type = models.ForeignKey('MachineType', on_delete=models.PROTECT)
details = models.CharField(max_length=255, blank=True)
port_lists = models.ManyToManyField('OuverturePortList', blank=True)
class Meta:
permissions = (
("view_interface", _("Can view an interface object")),
("change_interface_machine",
_("Can change the owner of an interface")),
)
verbose_name = _("interface")
verbose_name_plural = _("interfaces")
@cached_property
def is_active(self):
""" Renvoie si une interface doit avoir accès ou non """
machine = self.machine
user = self.machine.user
return machine.active and user.has_access()
@cached_property
def ipv6_slaac(self):
""" Renvoie un objet type ipv6 à partir du prefix associé à
l'iptype parent"""
if self.type.ip_type.prefix_v6:
return EUI(self.mac_address).ipv6(
IPNetwork(self.type.ip_type.prefix_v6).network
)
else:
return None
@cached_property
def gen_ipv6_dhcpv6(self):
"""Cree une ip, à assigner avec dhcpv6 sur une machine"""
prefix_v6 = self.type.ip_type.prefix_v6.encode().decode('utf-8')
if not prefix_v6:
return None
return IPv6Address(
IPv6Address(prefix_v6).exploded[:20] +
IPv6Address(self.id).exploded[20:]
)
def sync_ipv6_dhcpv6(self):
"""Affecte une ipv6 dhcpv6 calculée à partir de l'id de la machine"""
ipv6_dhcpv6 = self.gen_ipv6_dhcpv6
if not ipv6_dhcpv6:
return
ipv6 = Ipv6List.objects.filter(ipv6=str(ipv6_dhcpv6)).first()
if not ipv6:
ipv6 = Ipv6List(ipv6=str(ipv6_dhcpv6))
ipv6.interface = self
ipv6.save()
return
def sync_ipv6_slaac(self):
"""Cree, mets à jour et supprime si il y a lieu l'ipv6 slaac associée
à la machine
Sans prefixe ipv6, on return
Si l'ip slaac n'est pas celle qu'elle devrait être, on maj"""
ipv6_slaac = self.ipv6_slaac
if not ipv6_slaac:
return
ipv6_object = (Ipv6List.objects
.filter(interface=self, slaac_ip=True)
.first())
if not ipv6_object:
ipv6_object = Ipv6List(interface=self, slaac_ip=True)
if ipv6_object.ipv6 != str(ipv6_slaac):
ipv6_object.ipv6 = str(ipv6_slaac)
ipv6_object.save()
def sync_ipv6(self):
"""Cree et met à jour l'ensemble des ipv6 en fonction du mode choisi"""
if (preferences.models.OptionalMachine
.get_cached_value('ipv6_mode') == 'SLAAC'):
self.sync_ipv6_slaac()
elif (preferences.models.OptionalMachine
.get_cached_value('ipv6_mode') == 'DHCPV6'):
self.sync_ipv6_dhcpv6()
else:
return
def ipv6(self):
""" Renvoie le queryset de la liste des ipv6
On renvoie l'ipv6 slaac que si le mode slaac est activé
(et non dhcpv6)"""
if (preferences.models.OptionalMachine
.get_cached_value('ipv6_mode') == 'SLAAC'):
return self.ipv6list.all()
elif (preferences.models.OptionalMachine
.get_cached_value('ipv6_mode') == 'DHCPV6'):
return self.ipv6list.filter(slaac_ip=False)
else:
return None
def mac_bare(self):
""" Formatage de la mac type mac_bare"""
return str(EUI(self.mac_address, dialect=mac_bare)).lower()
def filter_macaddress(self):
""" Tente un formatage mac_bare, si échoue, lève une erreur de
validation"""
try:
self.mac_address = str(EUI(self.mac_address))
except:
raise ValidationError(_("The given MAC address is invalid."))
def clean(self, *args, **kwargs):
""" Formate l'addresse mac en mac_bare (fonction filter_mac)
et assigne une ipv4 dans le bon range si inexistante ou incohérente"""
# If type was an invalid value, django won't create an attribute type
# but try clean() as we may be able to create it from another value
# so even if the error as yet been detected at this point, django
# continues because the error might not prevent us from creating the
# instance.
# But in our case, it's impossible to create a type value so we raise
# the error.
if not hasattr(self, 'type'):
raise ValidationError(_("The selected IP type is invalid."))
self.filter_macaddress()
self.mac_address = str(EUI(self.mac_address)) or None
if not self.ipv4 or self.type.ip_type != self.ipv4.ip_type:
self.assign_ipv4()
super(Interface, self).clean(*args, **kwargs)
def assign_ipv4(self):
""" Assigne une ip à l'interface """
free_ips = self.type.ip_type.free_ip()
if free_ips:
self.ipv4 = free_ips[0]
else:
raise ValidationError(_("There is no IP address available in the"
" slash."))
return
def unassign_ipv4(self):
""" Sans commentaire, désassigne une ipv4"""
self.ipv4 = None
def update_type(self):
""" Lorsque le machinetype est changé de type d'ip, on réassigne"""
self.clean()
self.save()
def save(self, *args, **kwargs):
self.filter_macaddress()
# On verifie la cohérence en forçant l'extension par la méthode
if self.ipv4:
if self.type.ip_type != self.ipv4.ip_type:
raise ValidationError(_("The IPv4 address and the machine type"
" don't match."))
super(Interface, self).save(*args, **kwargs)
@staticmethod
def can_create(user_request, machineid, *_args, **_kwargs):
"""Verifie que l'user a les bons droits infra pour créer
une interface, ou bien que la machine appartient bien à l'user
:param macineid: Id de la machine parente de l'interface
:param user_request: instance utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
try:
machine = Machine.objects.get(pk=machineid)
except Machine.DoesNotExist:
return False, _("Nonexistent machine.")
if not user_request.has_perm('machines.add_interface'):
if not (preferences.models.OptionalMachine
.get_cached_value('create_machine')):
return False, _("You can't add a machine.")
max_lambdauser_interfaces = (preferences.models.OptionalMachine
.get_cached_value(
'max_lambdauser_interfaces'
))
if machine.user != user_request:
return False, _("You don't have the right to add an interface"
" to a machine of another user.")
if (machine.user.user_interfaces().count() >=
max_lambdauser_interfaces):
return False, (_("You reached the maximum number of interfaces"
" that you are allowed to create yourself"
" (%s)." % max_lambdauser_interfaces))
return True, None
@staticmethod
def can_change_machine(user_request, *_args, **_kwargs):
"""Check if a user can change the machine associated with an
Interface object """
return (user_request.has_perm('machines.change_interface_machine'),
_("Permission required to edit the machine."))
def can_edit(self, user_request, *args, **kwargs):
"""Verifie que l'user a les bons droits infra pour editer
cette instance interface, ou qu'elle lui appartient
:param self: Instance interface à editer
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if self.machine.user != user_request:
if (not user_request.has_perm('machines.change_interface') or
not self.machine.user.can_edit(
user_request,
*args,
**kwargs
)[0]):
return False, _("You don't have the right to edit a machine of"
" another user.")
return True, None
def can_delete(self, user_request, *args, **kwargs):
"""Verifie que l'user a les bons droits delete object pour del
cette instance interface, ou qu'elle lui appartient
:param self: Instance interface à del
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if self.machine.user != user_request:
if (not user_request.has_perm('machines.change_interface') or
not self.machine.user.can_edit(
user_request,
*args,
**kwargs
)[0]):
return False, _("You don't have the right to edit a machine of"
" another user.")
return True, None
def can_view(self, user_request, *_args, **_kwargs):
"""Vérifie qu'on peut bien voir cette instance particulière avec
droit view objet ou qu'elle appartient à l'user
:param self: instance interface à voir
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if (not user_request.has_perm('machines.view_interface') and
self.machine.user != user_request):
return False, _("You don't have the right to view machines other"
" than yours.")
return True, None
def __init__(self, *args, **kwargs):
super(Interface, self).__init__(*args, **kwargs)
self.field_permissions = {
'machine': self.can_change_machine,
}
def __str__(self):
try:
domain = self.domain
except:
domain = None
return str(domain)
def has_private_ip(self):
""" True si l'ip associée est privée"""
if self.ipv4:
return IPAddress(str(self.ipv4)).is_private()
else:
return False
def may_have_port_open(self):
""" True si l'interface a une ip et une ip publique.
Permet de ne pas exporter des ouvertures sur des ip privées
(useless)"""
return self.ipv4 and not self.has_private_ip()
class Ipv6List(RevMixin, AclMixin, FieldPermissionModelMixin, models.Model):
""" A list of IPv6 """
ipv6 = models.GenericIPAddressField(
protocol='IPv6',
)
interface = models.ForeignKey(
'Interface',
on_delete=models.CASCADE,
related_name='ipv6list'
)
slaac_ip = models.BooleanField(default=False)
class Meta:
permissions = (
("view_ipv6list", _("Can view an IPv6 addresses list object")),
("change_ipv6list_slaac_ip", _("Can change the SLAAC value of an"
" IPv6 addresses list")),
)
verbose_name = _("IPv6 addresses list")
verbose_name_plural = _("IPv6 addresses lists")
@staticmethod
def can_create(user_request, interfaceid, *_args, **_kwargs):
"""Verifie que l'user a les bons droits infra pour créer
une ipv6, ou possède l'interface associée
:param interfaceid: Id de l'interface associée à cet objet domain
:param user_request: instance utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
try:
interface = Interface.objects.get(pk=interfaceid)
except Interface.DoesNotExist:
return False, _("Nonexistent interface.")
if not user_request.has_perm('machines.add_ipv6list'):
if interface.machine.user != user_request:
return False, _("You don't have the right to add an alias to a"
" machine of another user.")
return True, None
@staticmethod
def can_change_slaac_ip(user_request, *_args, **_kwargs):
""" Check if a user can change the slaac value """
return (user_request.has_perm('machines.change_ipv6list_slaac_ip'),
_("Permission required to change the SLAAC value of an IPv6"
" address"))
def can_edit(self, user_request, *args, **kwargs):
"""Verifie que l'user a les bons droits infra pour editer
cette instance interface, ou qu'elle lui appartient
:param self: Instance interface à editer
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if self.interface.machine.user != user_request:
if (not user_request.has_perm('machines.change_ipv6list') or
not self.interface.machine.user.can_edit(
user_request,
*args,
**kwargs
)[0]):
return False, _("You don't have the right to edit a machine of"
" another user.")
return True, None
def can_delete(self, user_request, *args, **kwargs):
"""Verifie que l'user a les bons droits delete object pour del
cette instance interface, ou qu'elle lui appartient
:param self: Instance interface à del
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if self.interface.machine.user != user_request:
if (not user_request.has_perm('machines.change_ipv6list') or
not self.interface.machine.user.can_edit(
user_request,
*args,
**kwargs
)[0]):
return False, _("You don't have the right to edit a machine of"
" another user.")
return True, None
def can_view(self, user_request, *_args, **_kwargs):
"""Vérifie qu'on peut bien voir cette instance particulière avec
droit view objet ou qu'elle appartient à l'user
:param self: instance interface à voir
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if (not user_request.has_perm('machines.view_ipv6list') and
self.interface.machine.user != user_request):
return False, _("You don't have the right to view machines other"
" than yours.")
return True, None
def __init__(self, *args, **kwargs):
super(Ipv6List, self).__init__(*args, **kwargs)
self.field_permissions = {
'slaac_ip': self.can_change_slaac_ip,
}
def check_and_replace_prefix(self, prefix=None):
"""Si le prefixe v6 est incorrect, on maj l'ipv6"""
prefix_v6 = prefix or self.interface.type.ip_type.prefix_v6.encode().decode('utf-8')
if not prefix_v6:
return
if (IPv6Address(self.ipv6.encode().decode('utf-8')).exploded[:20] !=
IPv6Address(prefix_v6).exploded[:20]):
self.ipv6 = IPv6Address(
IPv6Address(prefix_v6).exploded[:20] +
IPv6Address(self.ipv6.encode().decode('utf-8')).exploded[20:]
)
self.save()
def clean(self, *args, **kwargs):
if self.slaac_ip and (Ipv6List.objects
.filter(interface=self.interface, slaac_ip=True)
.exclude(id=self.id)):
raise ValidationError(_("A SLAAC IP address is already registered."))
prefix_v6 = self.interface.type.ip_type.prefix_v6.encode().decode('utf-8')
if prefix_v6:
if (IPv6Address(self.ipv6.encode().decode('utf-8')).exploded[:20] !=
IPv6Address(prefix_v6).exploded[:20]):
raise ValidationError(_("The v6 prefix is incorrect and"
" doesn't match the type associated"
" with the machine."))
super(Ipv6List, self).clean(*args, **kwargs)
def save(self, *args, **kwargs):
"""Force à avoir appellé clean avant"""
self.full_clean()
super(Ipv6List, self).save(*args, **kwargs)
def __str__(self):
return str(self.ipv6)
class Domain(RevMixin, AclMixin, models.Model):
""" Objet domain. Enregistrement A et CNAME en même temps : permet de
stocker les alias et les nom de machines, suivant si interface_parent
ou cname sont remplis"""
interface_parent = models.OneToOneField(
'Interface',
on_delete=models.CASCADE,
blank=True,
null=True
)
name = models.CharField(
help_text=_("Mandatory and unique, must not contain dots."),
max_length=255
)
extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
cname = models.ForeignKey(
'self',
null=True,
blank=True,
related_name='related_domain'
)
class Meta:
unique_together = (("name", "extension"),)
permissions = (
("view_domain", _("Can view a domain object")),
)
verbose_name = _("domain")
verbose_name_plural = _("domains")
def get_extension(self):
""" Retourne l'extension de l'interface parente si c'est un A
Retourne l'extension propre si c'est un cname, renvoie None sinon"""
if self.interface_parent:
return self.interface_parent.type.ip_type.extension
elif hasattr(self, 'extension'):
return self.extension
else:
return None
def clean(self):
""" Validation :
- l'objet est bien soit A soit CNAME
- le cname est pas pointé sur lui-même
- le nom contient bien les caractères autorisés par la norme
dns et moins de 63 caractères au total
- le couple nom/extension est bien unique"""
if self.get_extension():
self.extension = self.get_extension()
if self.interface_parent and self.cname:
raise ValidationError(_("You can't create a both A and CNAME"
" record."))
if self.cname == self:
raise ValidationError(_("You can't create a CNAME record pointing"
" to itself."))
HOSTNAME_LABEL_PATTERN = re.compile(
r"(?!-)[A-Z\d-]+(?<!-)$",
re.IGNORECASE
)
dns = self.name.lower()
if len(dns) > 63:
raise ValidationError(_("The domain name %s is too long (over 63"
" characters).") % dns)
if not HOSTNAME_LABEL_PATTERN.match(dns):
raise ValidationError(_("The domain name %s contains forbidden"
" characters.") % dns)
self.validate_unique()
super(Domain, self).clean()
@cached_property
def dns_entry(self):
""" Une entrée DNS"""
if self.cname:
return "{name} IN CNAME {cname}.".format(
name=str(self.name).ljust(15),
cname=str(self.cname)
)
def save(self, *args, **kwargs):
""" Empèche le save sans extension valide.
Force à avoir appellé clean avant"""
if not self.get_extension():
raise ValidationError(_("Invalid extension."))
self.full_clean()
super(Domain, self).save(*args, **kwargs)
@cached_property
def get_source_interface(self):
"""Renvoie l'interface source :
- l'interface reliée si c'est un A
- si c'est un cname, suit le cname jusqu'à atteindre le A
et renvoie l'interface parente
Fonction récursive"""
if self.interface_parent:
return self.interface_parent
else:
return self.cname.get_parent_interface()
@staticmethod
def can_create(user_request, interfaceid, *_args, **_kwargs):
"""Verifie que l'user a les bons droits infra pour créer
un domain, ou possède l'interface associée
:param interfaceid: Id de l'interface associée à cet objet domain
:param user_request: instance utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
try:
interface = Interface.objects.get(pk=interfaceid)
except Interface.DoesNotExist:
return False, _("Nonexistent interface.")
if not user_request.has_perm('machines.add_domain'):
max_lambdauser_aliases = (preferences.models.OptionalMachine
.get_cached_value(
'max_lambdauser_aliases'
))
if interface.machine.user != user_request:
return False, _("You don't have the right to add an alias to a"
" machine of another user.")
if Domain.objects.filter(
cname__in=Domain.objects.filter(
interface_parent__in=(interface.machine.user
.user_interfaces())
)
).count() >= max_lambdauser_aliases:
return False, _("You reached the maximum number of alias that"
" you are allowed to create yourself (%s). "
% max_lambdauser_aliases)
return True, None
def can_edit(self, user_request, *_args, **_kwargs):
"""Verifie que l'user a les bons droits pour editer
cette instance domain
:param self: Instance domain à editer
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if (not user_request.has_perm('machines.change_domain') and
self.get_source_interface.machine.user != user_request):
return False, _("You don't have the right to edit an alias of a"
" machine of another user.")
return True, None
def can_delete(self, user_request, *_args, **_kwargs):
"""Verifie que l'user a les bons droits delete object pour del
cette instance domain, ou qu'elle lui appartient
:param self: Instance domain à del
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if (not user_request.has_perm('machines.delete_domain') and
self.get_source_interface.machine.user != user_request):
return False, _("You don't have the right to delete an alias of a"
" machine of another user.")
return True, None
def can_view(self, user_request, *_args, **_kwargs):
"""Vérifie qu'on peut bien voir cette instance particulière avec
droit view objet ou qu'elle appartient à l'user
:param self: instance domain à voir
:param user_request: instance user qui fait l'edition
:return: True ou False avec la raison de l'échec le cas échéant"""
if (not user_request.has_perm('machines.view_domain') and
self.get_source_interface.machine.user != user_request):
return False, _("You don't have the right to view machines other"
" than yours.")
return True, None
def __str__(self):
return str(self.name) + str(self.extension)
class IpList(RevMixin, AclMixin, models.Model):
""" A list of IPv4 """
ipv4 = models.GenericIPAddressField(protocol='IPv4', unique=True)
ip_type = models.ForeignKey('IpType', on_delete=models.CASCADE)
class Meta:
permissions = (
("view_iplist", _("Can view an IPv4 addresses list object")),
)
verbose_name = _("IPv4 addresses list")
verbose_name_plural = _("IPv4 addresses lists")
@cached_property
def need_infra(self):
""" Permet de savoir si un user basique peut assigner cette ip ou
non"""
return self.ip_type.need_infra
def clean(self):
""" Erreur si l'ip_type est incorrect"""
if not str(self.ipv4) in self.ip_type.ip_set_as_str:
raise ValidationError(_("The IPv4 address and the range of the IP"
" type don't match."))
return
def save(self, *args, **kwargs):
self.clean()
super(IpList, self).save(*args, **kwargs)
def __str__(self):
return self.ipv4
class Role(RevMixin, AclMixin, models.Model):
"""Define the role of a machine.
Allow automated generation of the server configuration.
"""
ROLE = (
('dhcp-server', _("DHCP server")),
('switch-conf-server', _("Switches configuration server")),
('dns-recursif-server', _("Recursive DNS server")),
('ntp-server', _("NTP server")),
('radius-server', _("RADIUS server")),
('log-server', _("Log server")),
('ldap-master-server', _("LDAP master server")),
('ldap-backup-server', _("LDAP backup server")),
('smtp-server', _("SMTP server")),
('postgresql-server', _("postgreSQL server")),
('mysql-server', _("mySQL server")),
('sql-client', _("SQL client")),
('gateway', _("Gateway")),
)
role_type = models.CharField(max_length=255, unique=True)
servers = models.ManyToManyField('Interface')
specific_role = models.CharField(
choices=ROLE,
null=True,
blank=True,
max_length=32,
)
class Meta:
permissions = (
("view_role", _("Can view a role object")),
)
verbose_name = _("server role")
verbose_name_plural = _("server roles")
@classmethod
def get_instance(cls, roleid, *_args, **_kwargs):
"""Get the Role instance with roleid.
Args:
roleid: The id
Returns:
The role.
"""
return cls.objects.get(pk=roleid)
@classmethod
def interface_for_roletype(cls, roletype):
"""Return interfaces for a roletype"""
return Interface.objects.filter(
role=cls.objects.filter(specific_role=roletype)
)
@classmethod
def all_interfaces_for_roletype(cls, roletype):
"""Return all interfaces for a roletype"""
return Interface.objects.filter(
machine__interface__role=cls.objects.filter(specific_role=roletype)
)
def save(self, *args, **kwargs):
super(Role, self).save(*args, **kwargs)
def __str__(self):
return str(self.role_type)
class Service(RevMixin, AclMixin, models.Model):
""" Definition d'un service (dhcp, dns, etc)"""
service_type = models.CharField(max_length=255, blank=True, unique=True)
min_time_regen = models.DurationField(
default=timedelta(minutes=1),
help_text=_("Minimal time before regeneration of the service.")
)
regular_time_regen = models.DurationField(
default=timedelta(hours=1),
help_text=_("Maximal time before regeneration of the service.")
)
servers = models.ManyToManyField('Interface', through='Service_link')
class Meta:
permissions = (
("view_service", _("Can view a service object")),
)
verbose_name = _("service to generate (DHCP, DNS, ...)")
verbose_name_plural = _("services to generate (DHCP, DNS, ...)")
def ask_regen(self):
""" Marque à True la demande de régénération pour un service x """
Service_link.objects.filter(service=self).exclude(asked_regen=True)\
.update(asked_regen=True)
return
def process_link(self, servers):
""" Django ne peut créer lui meme les relations manytomany avec table
intermediaire explicite"""
for serv in servers.exclude(
pk__in=Interface.objects.filter(service=self)
):
link = Service_link(service=self, server=serv)
link.save()
Service_link.objects.filter(service=self).exclude(server__in=servers)\
.delete()
return
def save(self, *args, **kwargs):
super(Service, self).save(*args, **kwargs)
def __str__(self):
return str(self.service_type)
def regen(service):
""" Fonction externe pour régérération d'un service, prend un objet service
en arg"""
obj = Service.objects.filter(service_type=service)
if obj:
obj[0].ask_regen()
return
class Service_link(RevMixin, AclMixin, models.Model):
""" Definition du lien entre serveurs et services"""
service = models.ForeignKey('Service', on_delete=models.CASCADE)
server = models.ForeignKey('Interface', on_delete=models.CASCADE)
last_regen = models.DateTimeField(auto_now_add=True)
asked_regen = models.BooleanField(default=False)
class Meta:
permissions = (
("view_service_link", _("Can view a service server link object")),
)
verbose_name = _("link between service and server")
verbose_name_plural = _("links between service and server")
def done_regen(self):
""" Appellé lorsqu'un serveur a regénéré son service"""
self.last_regen = timezone.now()
self.asked_regen = False
self.save()
@property
def need_regen(self):
""" Décide si le temps minimal écoulé est suffisant pour provoquer une
régénération de service"""
return bool(
(self.asked_regen and (
self.last_regen + self.service.min_time_regen
) < timezone.now()
) or (
self.last_regen + self.service.regular_time_regen
) < timezone.now()
)
@need_regen.setter
def need_regen(self, value):
"""
Force to set the need_regen value. True means a regen is asked and False
means a regen has been done.
:param value: (bool) The value to set to
"""
if not value:
self.last_regen = timezone.now()
self.asked_regen = value
self.save()
def __str__(self):
return str(self.server) + " " + str(self.service)
class OuverturePortList(RevMixin, AclMixin, models.Model):
"""Liste des ports ouverts sur une interface."""
name = models.CharField(
help_text=_("Name of the ports configuration"),
max_length=255
)
class Meta:
permissions = (
("view_ouvertureportlist", _("Can view a ports opening list"
" object")),
)
verbose_name = _("ports opening list")
verbose_name_plural = _("ports opening lists")
def can_delete(self, user_request, *_args, **_kwargs):
"""Verifie que l'user a les bons droits bureau pour delete
cette instance ouvertureportlist
:param self: Instance ouvertureportlist à delete
:param user_request: Utilisateur qui fait la requête
:return: soit True, soit False avec la raison de l'échec"""
if not user_request.has_perm('machines.delete_ouvertureportlist'):
return False, _("You don't have the right to delete a ports"
" opening list.")
if self.interface_set.all():
return False, _("This ports opening list is used.")
return True, None
def __str__(self):
return self.name
def tcp_ports_in(self):
"""Renvoie la liste des ports ouverts en TCP IN pour ce profil"""
return self.ouvertureport_set.filter(
protocole=OuverturePort.TCP,
io=OuverturePort.IN
)
def udp_ports_in(self):
"""Renvoie la liste des ports ouverts en UDP IN pour ce profil"""
return self.ouvertureport_set.filter(
protocole=OuverturePort.UDP,
io=OuverturePort.IN
)
def tcp_ports_out(self):
"""Renvoie la liste des ports ouverts en TCP OUT pour ce profil"""
return self.ouvertureport_set.filter(
protocole=OuverturePort.TCP,
io=OuverturePort.OUT
)
def udp_ports_out(self):
"""Renvoie la liste des ports ouverts en UDP OUT pour ce profil"""
return self.ouvertureport_set.filter(
protocole=OuverturePort.UDP,
io=OuverturePort.OUT
)
class OuverturePort(RevMixin, AclMixin, models.Model):
"""
Représente un simple port ou une plage de ports.
Les ports de la plage sont compris entre begin et en inclus.
Si begin == end alors on ne représente qu'un seul port.
On limite les ports entre 0 et 65535, tels que défini par la RFC
"""
TCP = 'T'
UDP = 'U'
IN = 'I'
OUT = 'O'
begin = models.PositiveIntegerField(validators=[MaxValueValidator(65535)])
end = models.PositiveIntegerField(validators=[MaxValueValidator(65535)])
port_list = models.ForeignKey(
'OuverturePortList',
on_delete=models.CASCADE
)
protocole = models.CharField(
max_length=1,
choices=(
(TCP, 'TCP'),
(UDP, 'UDP'),
),
default=TCP,
)
io = models.CharField(
max_length=1,
choices=(
(IN, 'IN'),
(OUT, 'OUT'),
),
default=OUT,
)
class Meta:
verbose_name = _("ports opening")
verbose_name = _("ports openings")
def __str__(self):
if self.begin == self.end:
return str(self.begin)
return ':'.join([str(self.begin), str(self.end)])
def show_port(self):
"""Formatage plus joli, alias pour str"""
return str(self)
@receiver(post_save, sender=Machine)
def machine_post_save(**kwargs):
"""Synchronisation ldap et régen parefeu/dhcp lors de la modification
d'une machine"""
user = kwargs['instance'].user
user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
regen('dhcp')
regen('mac_ip_list')
@receiver(post_delete, sender=Machine)
def machine_post_delete(**kwargs):
"""Synchronisation ldap et régen parefeu/dhcp lors de la suppression
d'une machine"""
machine = kwargs['instance']
user = machine.user
user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
regen('dhcp')
regen('mac_ip_list')
@receiver(post_save, sender=Interface)
def interface_post_save(**kwargs):
"""Synchronisation ldap et régen parefeu/dhcp lors de la modification
d'une interface"""
interface = kwargs['instance']
interface.sync_ipv6()
user = interface.machine.user
user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
# Regen services
regen('dhcp')
regen('mac_ip_list')
@receiver(post_delete, sender=Interface)
def interface_post_delete(**kwargs):
"""Synchronisation ldap et régen parefeu/dhcp lors de la suppression
d'une interface"""
interface = kwargs['instance']
user = interface.machine.user
user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
@receiver(post_save, sender=IpType)
def iptype_post_save(**kwargs):
"""Generation des objets ip après modification d'un range ip"""
iptype = kwargs['instance']
iptype.gen_ip_range()
iptype.check_replace_prefixv6()
@receiver(post_save, sender=MachineType)
def machinetype_post_save(**kwargs):
"""Mise à jour des interfaces lorsque changement d'attribution
d'une machinetype (changement iptype parent)"""
machinetype = kwargs['instance']
for interface in machinetype.all_interfaces():
interface.update_type()
@receiver(post_save, sender=Domain)
def domain_post_save(**_kwargs):
"""Regeneration dns après modification d'un domain object"""
regen('dns')
@receiver(post_delete, sender=Domain)
def domain_post_delete(**_kwargs):
"""Regeneration dns après suppression d'un domain object"""
regen('dns')
@receiver(post_save, sender=Extension)
def extension_post_save(**_kwargs):
"""Regeneration dns après modification d'une extension"""
regen('dns')
@receiver(post_delete, sender=Extension)
def extension_post_selete(**_kwargs):
"""Regeneration dns après suppression d'une extension"""
regen('dns')
@receiver(post_save, sender=SOA)
def soa_post_save(**_kwargs):
"""Regeneration dns après modification d'un SOA"""
regen('dns')
@receiver(post_delete, sender=SOA)
def soa_post_delete(**_kwargs):
"""Regeneration dns après suppresson d'un SOA"""
regen('dns')
@receiver(post_save, sender=Mx)
def mx_post_save(**_kwargs):
"""Regeneration dns après modification d'un MX"""
regen('dns')
@receiver(post_delete, sender=Mx)
def mx_post_delete(**_kwargs):
"""Regeneration dns après suppresson d'un MX"""
regen('dns')
@receiver(post_save, sender=Ns)
def ns_post_save(**_kwargs):
"""Regeneration dns après modification d'un NS"""
regen('dns')
@receiver(post_delete, sender=Ns)
def ns_post_delete(**_kwargs):
"""Regeneration dns après modification d'un NS"""
regen('dns')
@receiver(post_save, sender=Txt)
def text_post_save(**_kwargs):
"""Regeneration dns après modification d'un TXT"""
regen('dns')
@receiver(post_delete, sender=Txt)
def text_post_delete(**_kwargs):
"""Regeneration dns après modification d'un TX"""
regen('dns')
@receiver(post_save, sender=DName)
def dname_post_save(**_kwargs):
"""Updates the DNS regen after modification of a DName object."""
regen('dns')
@receiver(post_delete, sender=DName)
def dname_post_delete(**_kwargs):
"""Updates the DNS regen after deletion of a DName object."""
regen('dns')
@receiver(post_save, sender=Srv)
def srv_post_save(**_kwargs):
"""Regeneration dns après modification d'un SRV"""
regen('dns')
@receiver(post_delete, sender=Srv)
def srv_post_delete(**_kwargs):
"""Regeneration dns après modification d'un SRV"""
regen('dns')