282 lines
8.3 KiB
Python
282 lines
8.3 KiB
Python
# This file is part of dnmgmt, a number resource management system
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# Licensed under GNU General Public License v3 or later
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# Written by Sebastian Lohff (seba@someserver.de)
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from django.db import models
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from django.db.models import Q
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from django.urls import reverse
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from dncore.models import User
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from .validators import HandleValidator, HandleValidatorWithSuffix
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import ipaddress
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class WhoisObject(models.Model):
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class Meta:
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abstract = True
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handleSuffix = ""
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handle = models.SlugField(max_length=32, unique=True, verbose_name='handle', validators=[HandleValidator()])
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created = models.DateTimeField(auto_now_add=True)
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last_modified = models.DateTimeField(auto_now_add=True)
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#def __init__(self, *args, **kwargs):
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# super(WhoisObject, self).__init__(*args, **kwargs)
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# if getattr(self, "handle"):
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# field = self._meta.get_field("handle")
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# if HandleValidatorWithSuffix not in map(type, field.validators):
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# print(self.handle, "NOOOOT")
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# field.validators.append(HandleValidatorWithSuffix(self.handleSuffix))
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# else:
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# print(self.handle, list(map(type, field.validators)))
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def getPK(self):
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return self.handle
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def __str__(self):
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return self.handle
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def getAppName(self):
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return "whoisdb"
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def getClassName(self):
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return self._meta.object_name
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def genHandle(self, main=None):
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if not main:
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main = self.name
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return self.genGenericHandle(main)
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@classmethod
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def genGenericHandle(clazz, main):
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prefix = ""
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if " " in main:
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parts = main.split(" ")
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prefix = "".join(map(lambda _x: _x[0], parts))
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if len(prefix) < 3 and len(parts[-1]) > 1:
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prefix += parts[-1][1:4 - len(prefix)]
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else:
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prefix = main[0:3]
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prefix = prefix.upper()
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i = 1
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handle = "%s%%d-%s" % (prefix, clazz.handleSuffix)
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while True:
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try:
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prefix
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clazz.objects.get(handle=handle % i)
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i += 1
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except clazz.DoesNotExist:
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break
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return handle % i
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def getNoDeleteReasons(self):
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raise NotImplementedError("Delete reason checking is not implemented for this model")
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def canBeDeleted(self):
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return not bool(self.getNoDeleteReasons())
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def handleAuto(self, name=None):
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if self.handle == "AUTO":
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self.handle = self.genHandle(name)
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class Maintainer(WhoisObject):
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handleSuffix = "MNT"
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auth = models.ManyToManyField(User)
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handle = models.SlugField(max_length=32, unique=True, verbose_name='handle', validators=[HandleValidatorWithSuffix('MNT')], help_text="Must end with -MNT, eg FOO3-MNT")
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description = models.CharField(max_length=64, blank=True, help_text="Short description what this maintainer is for")
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admin_c = models.ManyToManyField("Contact", verbose_name="Administrative Contact")
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rir = models.BooleanField(default=False)
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lir = models.BooleanField(default=False)
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# autoInclude = models.BooleanField(default=True)
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def get_absolute_url(self):
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return reverse("whoisdb:handle-detail", kwargs={"handle": self.handle})
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def getNoDeleteReasons(self):
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reasons = []
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# FIXME: Tempfix for circular dependency problem
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import domains.models
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mntables = [Contact, ASBlock, ASNumber, InetNum, domains.models.Domain, domains.models.Nameserver]
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for mntable in mntables:
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candidates = mntable.objects.filter(mnt_by=self).annotate(mntCount=models.Count('mnt_by')).filter(mntCount__lte=1)
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for candidate in candidates:
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reasons.append("Object %s would have no maintainers left." % candidate.handle)
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return reasons
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def canEdit(self, user):
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return user in self.auth.all()
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class MntdObject(WhoisObject):
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class Meta:
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abstract = True
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mnt_by = models.ManyToManyField(Maintainer, help_text="You can select multiple maintainers here")
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def canEdit(self, user):
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if not hasattr(user, "maintainer_set"):
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return False
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mnts = user.maintainer_set.all()
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objmnts = self.mnt_by.all()
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if hasattr(self, "mnt_lower"):
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objmnts |= self.mnt_lower.all()
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for objmnt in objmnts:
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if objmnt in mnts:
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return True
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return False
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@classmethod
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def getMntQueryset(clazz, mnts, instance, attr=None):
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mntQ = Q(mnt_by__in=mnts)
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if hasattr(clazz, "mnt_lower"):
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mntQ |= Q(mnt_lower__in=mnts)
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qs = clazz.objects.filter(mntQ)
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if attr and instance and instance.pk:
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if type(instance._meta.get_field(attr)) == models.ManyToManyField:
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qs |= getattr(instance, attr).all()
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elif getattr(instance, attr) is not None:
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qs |= clazz.objects.filter(pk=getattr(instance, attr).pk)
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return qs.distinct()
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class Contact(MntdObject):
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handleSuffix = "DN"
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TYPE_PERSON = 'PERSON'
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TYPE_ROLE = 'ROLE'
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TYPE = (('person', TYPE_PERSON), ('role', TYPE_ROLE))
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TYPE = (('person', TYPE_PERSON),)
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name = models.CharField(max_length=128)
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type = models.CharField(max_length=10, choices=TYPE, default=TYPE_PERSON)
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def get_absolute_url(self):
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return reverse("whoisdb:handle-detail", kwargs={"handle": self.handle})
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def getNoDeleteReasons(self):
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reasons = []
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contactables = [Maintainer, ASBlock, ASNumber, InetNum]
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for contactable in contactables:
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candidates = contactable.objects.filter(admin_c=self).annotate(contactCount=models.Count('admin_c')).filter(contactCount__lte=1)
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for candidate in candidates:
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reasons.append("Object %s would have no contact left." % candidate.handle)
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return reasons
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class ASBlock(MntdObject):
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handleSuffix = "ASB"
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parent_block = models.ForeignKey("ASBlock", models.CASCADE, null=True, blank=True, default=None)
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name = models.CharField(max_length=32)
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asBegin = models.PositiveIntegerField()
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asEnd = models.PositiveIntegerField()
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description = models.CharField(max_length=64, blank=True)
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admin_c = models.ManyToManyField("Contact")
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mnt_lower = models.ManyToManyField(Maintainer, related_name='lower_asblock_set', blank=True)
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def contains(self, block):
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return self.asBegin <= block.asBegin <= self.asEnd and self.asBegin <= block.asEnd <= self.asEnd
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def getResource(self):
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return "%s - %s" % (self.asBegin, self.asEnd)
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def get_absolute_url(self):
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return reverse("whoisdb:handle-detail", kwargs={"handle": self.handle})
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def getNoDeleteReasons(self):
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reasons = []
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if self.asblock_set.count() > 0:
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reasons.append("The AS block is referenced by the following other blocks: %s" % (", ".join(map(lambda _x: _x.handle, self.asblock_set.all()))))
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if self.asnumber_set.count() > 0:
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reasons.append("The AS block is referenced by the following as numbers: %s" % (", ".join(map(lambda _x: _x.handle, self.asnumber_set.all()))))
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return reasons
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class ASNumber(MntdObject):
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handleSuffix = "AS"
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number = models.PositiveIntegerField(unique=True, db_index=True)
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volatile = models.BooleanField(default=False, help_text="Check if this AS is not going to be online 24/7 (for example on a laptop)")
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asblock = models.ForeignKey(ASBlock, models.CASCADE)
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name = models.CharField(max_length=32)
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description = models.CharField(max_length=64, blank=True)
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admin_c = models.ManyToManyField("Contact")
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mnt_lower = models.ManyToManyField(Maintainer, related_name='lower_asnumber_set', blank=True)
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def get_absolute_url(self):
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return reverse("whoisdb:handle-detail", kwargs={"handle": self.handle})
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def getNoDeleteReasons(self):
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reasons = []
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return reasons
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def getResource(self):
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return str(self.number)
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class InetNum(MntdObject):
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class Meta:
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unique_together = (
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("address", "netmask"),
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)
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handleSuffix = "NET"
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IPv4 = "ipv4"
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IPv6 = "ipv6"
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PROTO = ((IPv4, 'IPv4'), (IPv6, 'IPv6'))
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protocol = models.CharField(max_length=4, choices=PROTO)
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address = models.GenericIPAddressField(db_index=True)
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netmask = models.PositiveIntegerField()
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parent_range = models.ForeignKey("InetNum", models.CASCADE, null=True, blank=True, default=None)
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name = models.CharField(max_length=64)
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description = models.CharField(max_length=64, blank=True)
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origin_as = models.ManyToManyField(ASNumber, blank=True)
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admin_c = models.ManyToManyField("Contact")
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mnt_lower = models.ManyToManyField(Maintainer, related_name='lower_inetnum_set', blank=True)
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def getResource(self):
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return self.prefix()
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def prefix(self):
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""" Helper function, mainly used in templates """
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return "%s/%s" % (self.address, self.netmask)
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def getNetwork(self):
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return ipaddress.ip_network(self.prefix())
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def get_absolute_url(self):
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return reverse("whoisdb:handle-detail", kwargs={"handle": self.handle})
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def getNoDeleteReasons(self):
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reasons = []
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if self.inetnum_set.all().count() > 0:
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reasons.append("The following networks depend on this network: %s" % ", ".join(map(lambda _x: _x.handle, self.inetnum_set.all())))
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return reasons
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