mirror of
https://gitlab2.federez.net/re2o/re2o
synced 2024-11-30 08:32:26 +00:00
302 lines
11 KiB
Python
302 lines
11 KiB
Python
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
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# se veut agnostique au réseau considéré, de manière à être installable en
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# quelques clics.
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#
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# Copyright © 2017 Gabriel Détraz
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# Copyright © 2017 Goulven Kermarec
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# Copyright © 2017 Augustin Lemesle
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc.,
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# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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from django.db import models
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from django.db.models.signals import post_save, pre_delete, post_delete
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from django.dispatch import receiver
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from django.forms import ValidationError
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from django.utils.functional import cached_property
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from macaddress.fields import MACAddressField
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from netaddr import mac_bare, EUI, IPSet, IPNetwork
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from django.core.validators import MinValueValidator,MaxValueValidator
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import re
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from reversion import revisions as reversion
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from re2o.settings import MAIN_EXTENSION
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class Machine(models.Model):
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""" Class définissant une machine, object parent user, objets fils interfaces"""
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PRETTY_NAME = "Machine"
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user = models.ForeignKey('users.User', on_delete=models.PROTECT)
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name = models.CharField(max_length=255, help_text="Optionnel", blank=True, null=True)
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active = models.BooleanField(default=True)
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def __str__(self):
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return str(self.user) + ' - ' + str(self.id) + ' - ' + str(self.name)
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class MachineType(models.Model):
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""" Type de machine, relié à un type d'ip, affecté aux interfaces"""
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PRETTY_NAME = "Type de machine"
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type = models.CharField(max_length=255)
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ip_type = models.ForeignKey('IpType', on_delete=models.PROTECT, blank=True, null=True)
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def all_interfaces(self):
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return Interface.objects.filter(type=self)
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def __str__(self):
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return self.type
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class IpType(models.Model):
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""" Type d'ip, définissant un range d'ip, affecté aux machine types"""
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PRETTY_NAME = "Type d'ip"
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type = models.CharField(max_length=255)
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extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
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need_infra = models.BooleanField(default=False)
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domaine_ip = models.GenericIPAddressField(protocol='IPv4')
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domaine_range = models.IntegerField(validators=[MinValueValidator(8), MaxValueValidator(32)])
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@cached_property
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def network(self):
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return str(self.domaine_ip) + '/' + str(self.domaine_range)
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@cached_property
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def ip_network(self):
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return IPNetwork(self.network)
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@cached_property
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def ip_set(self):
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return IPSet(self.ip_network)
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@cached_property
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def ip_set_as_str(self):
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return [str(x) for x in self.ip_set]
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def ip_objects(self):
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return IpList.objects.filter(ip_type=self)
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def free_ip(self):
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return IpList.objects.filter(interface__isnull=True).filter(ip_type=self)
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def gen_ip_range(self):
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# Creation du range d'ip dans les objets iplist
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for ip in self.ip_network.iter_hosts():
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obj, created = IpList.objects.get_or_create(ip_type=self, ipv4=str(ip))
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def del_ip_range(self):
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""" Methode dépréciée, IpList est en mode cascade et supprimé automatiquement"""
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if Interface.objects.filter(ipv4__in=self.ip_objects()):
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raise ValidationError("Une ou plusieurs ip du range sont affectées, impossible de supprimer le range")
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for ip in self.ip_objects():
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ip.delete()
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def clean(self):
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# On check que les / ne se recoupent pas
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for element in IpType.objects.all():
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if not self.ip_set.isdisjoint(element.ip_set):
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raise ValidationError("Le range indiqué n'est pas disjoint des ranges existants")
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return
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def save(self, *args, **kwargs):
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self.clean()
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super(IpType, self).save(*args, **kwargs)
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def __str__(self):
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return self.type
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class Extension(models.Model):
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PRETTY_NAME = "Extensions dns"
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name = models.CharField(max_length=255, unique=True)
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need_infra = models.BooleanField(default=False)
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origin = models.OneToOneField('IpList', on_delete=models.PROTECT, blank=True, null=True)
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def __str__(self):
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return self.name
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class Mx(models.Model):
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PRETTY_NAME = "Enregistrements MX"
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zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
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priority = models.IntegerField(unique=True)
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name = models.OneToOneField('Domain', on_delete=models.PROTECT)
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def __str__(self):
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return str(self.zone) + ' ' + str(self.priority) + ' ' + str(self.name)
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class Ns(models.Model):
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PRETTY_NAME = "Enregistrements NS"
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zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
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ns = models.OneToOneField('Domain', on_delete=models.PROTECT)
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def __str__(self):
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return str(self.zone) + ' ' + str(self.ns)
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class Interface(models.Model):
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PRETTY_NAME = "Interface"
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ipv4 = models.OneToOneField('IpList', on_delete=models.PROTECT, blank=True, null=True)
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#ipv6 = models.GenericIPAddressField(protocol='IPv6', null=True)
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mac_address = MACAddressField(integer=False, unique=True)
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machine = models.ForeignKey('Machine', on_delete=models.CASCADE)
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type = models.ForeignKey('MachineType', on_delete=models.PROTECT)
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details = models.CharField(max_length=255, blank=True)
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@cached_property
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def is_active(self):
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""" Renvoie si une interface doit avoir accès ou non """
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machine = self.machine
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user = self.machine.user
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return machine.active and user.has_access()
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def mac_bare(self):
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return str(EUI(self.mac_address, dialect=mac_bare)).lower()
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def clean(self, *args, **kwargs):
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if not self.ipv4 or self.type.ip_type != self.ipv4.ip_type:
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self.assign_ipv4()
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def assign_ipv4(self):
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""" Assigne une ip à l'interface """
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free_ips = self.type.ip_type.free_ip()
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if free_ips:
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self.ipv4 = free_ips[0]
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else:
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raise ValidationError("Il n'y a plus d'ip disponibles dans le slash")
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return
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def unassign_ipv4(self):
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self.ipv4 = None
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def update_type(self):
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""" Lorsque le machinetype est changé de type d'ip, on réassigne"""
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self.clean()
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self.save()
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def save(self, *args, **kwargs):
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self.mac_address = str(EUI(self.mac_address)) or None
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# On verifie la cohérence en forçant l'extension par la méthode
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if self.type.ip_type != self.ipv4.ip_type:
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raise ValidationError("L'ipv4 et le type de la machine ne correspondent pas")
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super(Interface, self).save(*args, **kwargs)
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def __str__(self):
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try:
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domain = self.domain
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except:
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domain = None
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return str(domain)
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class Domain(models.Model):
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PRETTY_NAME = "Domaine dns"
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interface_parent = models.OneToOneField('Interface', on_delete=models.CASCADE, blank=True, null=True)
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name = models.CharField(help_text="Obligatoire et unique, ne doit pas comporter de points", max_length=255)
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extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
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cname = models.ForeignKey('self', null=True, blank=True, related_name='related_domain')
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class Meta:
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unique_together = (("name", "extension"),)
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def get_extension(self):
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if self.interface_parent:
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return self.interface_parent.type.ip_type.extension
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elif hasattr(self,'extension'):
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return self.extension
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else:
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return None
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def clean(self):
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if self.get_extension():
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self.extension=self.get_extension()
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""" Validation du nom de domaine, extensions dans type de machine, prefixe pas plus long que 63 caractères """
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if self.interface_parent and self.cname:
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raise ValidationError("On ne peut créer à la fois A et CNAME")
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if self.cname==self:
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raise ValidationError("On ne peut créer un cname sur lui même")
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HOSTNAME_LABEL_PATTERN = re.compile("(?!-)[A-Z\d-]+(?<!-)$", re.IGNORECASE)
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dns = self.name.lower()
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if len(dns) > 63:
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raise ValidationError("Le nom de domaine %s est trop long (maximum de 63 caractères)." % dns)
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if not HOSTNAME_LABEL_PATTERN.match(dns):
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raise ValidationError("Ce nom de domaine %s contient des carractères interdits." % dns)
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self.validate_unique()
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super(Domain, self).clean()
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def save(self, *args, **kwargs):
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if not self.get_extension():
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raise ValidationError("Extension invalide")
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self.full_clean()
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super(Domain, self).save(*args, **kwargs)
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def __str__(self):
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return str(self.name) + str(self.extension)
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class IpList(models.Model):
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PRETTY_NAME = "Addresses ipv4"
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ipv4 = models.GenericIPAddressField(protocol='IPv4', unique=True)
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ip_type = models.ForeignKey('IpType', on_delete=models.CASCADE)
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@cached_property
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def need_infra(self):
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return self.ip_type.need_infra
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def clean(self):
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if not str(self.ipv4) in self.ip_type.ip_set_as_str:
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raise ValidationError("L'ipv4 et le range de l'iptype ne correspondent pas!")
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return
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def save(self, *args, **kwargs):
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self.clean()
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super(IpList, self).save(*args, **kwargs)
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def __str__(self):
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return self.ipv4
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@receiver(post_save, sender=Machine)
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def machine_post_save(sender, **kwargs):
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user = kwargs['instance'].user
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user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
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@receiver(post_delete, sender=Machine)
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def machine_post_delete(sender, **kwargs):
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machine = kwargs['instance']
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user = machine.user
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user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
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@receiver(post_save, sender=Interface)
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def interface_post_save(sender, **kwargs):
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interface = kwargs['instance']
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user = interface.machine.user
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user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
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@receiver(post_delete, sender=Interface)
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def interface_post_delete(sender, **kwargs):
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interface = kwargs['instance']
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user = interface.machine.user
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user.ldap_sync(base=False, access_refresh=False, mac_refresh=True)
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@receiver(post_save, sender=IpType)
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def iptype_post_save(sender, **kwargs):
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iptype = kwargs['instance']
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iptype.gen_ip_range()
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@receiver(post_save, sender=MachineType)
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def machine_post_save(sender, **kwargs):
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machinetype = kwargs['instance']
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for interface in machinetype.all_interfaces():
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interface.update_type()
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