Auth mechanism

src/pretix/api/views/device.py

@@ -0,0 +1,59 @@
+import logging
+
+from django.utils.timezone import now
+from rest_framework import serializers
+from rest_framework.exceptions import ValidationError
+from rest_framework.response import Response
+from rest_framework.views import APIView
+
+from pretix.base.models import Device
+from pretix.base.models.devices import generate_api_token
+
+logger = logging.getLogger(__name__)
+
+
+class InitializationRequestSerializer(serializers.Serializer):
+    token = serializers.CharField(max_length=190)
+    hardware_brand = serializers.CharField(max_length=190)
+    hardware_model = serializers.CharField(max_length=190)
+    software_brand = serializers.CharField(max_length=190)
+    software_version = serializers.CharField(max_length=190)
+
+
+class DeviceSerializer(serializers.ModelSerializer):
+    organizer = serializers.SlugRelatedField(slug_field='slug', read_only=True)
+
+    class Meta:
+        model = Device
+        fields = [
+            'organizer', 'device_id', 'unique_serial', 'api_token',
+            'name'
+        ]
+
+
+class InitializeView(APIView):
+    authentication_classes = tuple()
+    permission_classes = tuple()
+
+    def post(self, request, format=None):
+        serializer = InitializationRequestSerializer(data=request.data)
+        serializer.is_valid(raise_exception=True)
+
+        try:
+            device = Device.objects.get(initialization_token=serializer.validated_data.get('token'))
+        except Device.DoesNotExist:
+            raise ValidationError({'token': ['Unknown initialization token.']})
+
+        if device.initialized:
+            raise ValidationError({'token': ['This initialization token has already been used.']})
+
+        device.initialized = now()
+        device.hardware_brand = serializer.validated_data.get('hardware_brand')
+        device.hardware_model = serializer.validated_data.get('hardware_model')
+        device.software_brand = serializer.validated_data.get('software_brand')
+        device.software_version = serializer.validated_data.get('software_version')
+        device.api_token = generate_api_token()
+        device.save()
+
+        serializer = DeviceSerializer(device)
+        return Response(serializer.data)