159 lines
4.2 KiB
Python
159 lines
4.2 KiB
Python
import uuid
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import ipaddress
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from django.db import models
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from django.contrib.auth import get_user_model
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from django.core.validators import MinValueValidator, MaxValueValidator
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from django.core.exceptions import FieldError, ValidationError
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from uncloud_pay.models import Order
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class WireGuardVPNPool(models.Model):
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"""
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Network address pools from which VPNs can be created
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"""
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network = models.GenericIPAddressField(unique=True)
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network_mask = models.IntegerField(validators=[MinValueValidator(0),
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MaxValueValidator(128)])
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subnetwork_mask = models.IntegerField(validators=[
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MinValueValidator(0),
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MaxValueValidator(128)
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])
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vpn_server_hostname = models.CharField(max_length=256)
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wireguard_private_key = models.CharField(max_length=48)
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wireguard_public_key = models.CharField(max_length=48)
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@property
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def max_pool_index(self):
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"""
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Return the highest possible network / last network id
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"""
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bits = self.subnetwork_mask - self.network_mask
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return (2**bits)-1
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@property
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def ip_network(self):
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return ipaddress.ip_network(f"{self.network}/{self.network_mask}")
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def __str__(self):
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return f"{self.ip_network} (subnets: /{self.subnetwork_mask})"
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class WireGuardVPN(models.Model):
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"""
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Created VPNNetworks
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"""
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owner = models.ForeignKey(get_user_model(),
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on_delete=models.CASCADE)
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vpnpool = models.ForeignKey(WireGuardVPNPool,
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on_delete=models.CASCADE)
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pool_index = models.IntegerField(unique=True)
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wireguard_public_key = models.CharField(max_length=48)
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@property
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def network_mask(self):
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return self.vpnpool.subnetwork_mask
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@property
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def vpn_server(self):
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return self.vpnpool.vpn_server_hostname
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@property
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def vpn_server_public_key(self):
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return self.vpnpool.wireguard_public_key
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@property
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def address(self):
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"""
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Locate the correct subnet in the supernet
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First get the network itself
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"""
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net = self.vpnpool.ip_network
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subnet = net[(2**(128-self.vpnpool.subnetwork_mask)) * self.pool_index]
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return str(subnet)
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def __str__(self):
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return f"{self.address} ({self.pool_index})"
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class WireGuardVPNFreeLeases(models.Model):
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"""
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Previously used VPNNetworks
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"""
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vpnpool = models.ForeignKey(WireGuardVPNPool,
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on_delete=models.CASCADE)
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pool_index = models.IntegerField(unique=True)
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################################################################################
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class MACAdress(models.Model):
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default_prefix = 0x420000000000
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class ReverseDNSEntry(models.Model):
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"""
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A reverse DNS entry
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"""
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owner = models.ForeignKey(get_user_model(),
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on_delete=models.CASCADE)
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ip_address = models.GenericIPAddressField(null=False, unique=True)
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name = models.CharField(max_length=253, null=False)
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@property
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def reverse_pointer(self):
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return ipaddress.ip_address(self.ip_address).reverse_pointer
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def implement(self):
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"""
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The implement function implements the change
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"""
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# Get all DNS entries (?) / update this DNS entry
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# convert to DNS name
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#
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pass
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def save(self, *args, **kwargs):
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# Product.objects.filter(config__parameters__contains='reverse_dns_network')
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# FIXME: check if order is still active / not replaced
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allowed = False
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product = None
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for order in Order.objects.filter(config__parameters__reverse_dns_network__isnull=False,
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owner=self.owner):
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network = order.config['parameters']['reverse_dns_network']
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net = ipaddress.ip_network(network)
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addr = ipaddress.ip_address(self.ip_address)
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if addr in net:
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allowed = True
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product = order.product
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break
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if not allowed:
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raise ValidationError(f"User {self.owner} does not have the right to create reverse DNS entry for {self.ip_address}")
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super().save(*args, **kwargs)
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def __str__(self):
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return f"{self.ip_address} - {self.name}"
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