update to work on different computer

Signed-off-by: Nico Schottelius <nico@nico-notebook.schottelius.org>

uncloud_django_based/uncloud/uncloud_net/serializers.py

@@ -1,4 +1,7 @@
+import base64
+
 from django.contrib.auth import get_user_model
+from django.utils.translation import gettext_lazy as _
 from rest_framework import serializers
 
 from .models import *
@@ -10,9 +13,48 @@ class VPNPoolSerializer(serializers.ModelSerializer):
 
 class VPNNetworkSerializer(serializers.ModelSerializer):
 
-    network_size = serializers.IntegerField(min_value=0,
-                                            max_value=128)
-
     class Meta:
         model = VPNNetwork
         fields = '__all__'
+
+    # This is required for finding the VPN pool, but does not
+    # exist in the model
+    network_size = serializers.IntegerField(min_value=0,
+                                            max_value=128)
+
+    def validate_wireguard_public_key(self, value):
+        msg = _("Supplied key is not a valid wireguard public key")
+
+        """ FIXME: verify that this does not create broken wireguard config files,
+        i.e. contains \n or similar!
+        We might even need to be more strict to not break wireguard...
+        """
+        print(value)
+
+        try:
+            base64.standard_b64decode(value)
+        except Exception as e:
+            raise serializers.ValidationError(msg)
+
+        if '\n' in value:
+            raise serializers.ValidationError(msg)
+
+        return value
+
+    def validate(self, data):
+
+        # FIXME: filter for status = active or similar
+        all_pools = VPNPool.objects.all()
+        sizes = [ p.subnetwork_size for p in all_pools ]
+
+        pools = VPNPool.objects.filter(subnetwork_size=data['network_size'])
+
+        if len(pools) == 0:
+            msg = _("No pool available for networks with size = {}. Available are: {}".format(data['network_size'], sizes))
+            raise serializers.ValidationError(msg)
+
+
+        return data
+
+    def create(self, validated_data):
+        from_pool =