Adds support for large iOS device tokens

- Changed max_length for registration_id to 200 from 64
- Added tests for 100 bytes device tokens
- Changed Validation condition check in APNSDeviceSerializer
- Changes to comments and readme
- Added migrations

Author: ulhas

README.rst

@@ -175,7 +175,7 @@ ViewSets are available for both APNS and GCM devices in two permission flavors:
 	- Permissions are ``IsAuthenticated`` and custom permission ``IsOwner``, which will only allow the ``request.user`` to get and update devices that belong to that user
 	- Requires a user to be authenticated, so all devices will be associated with a user
 
-When creating an ``APNSDevice``, the ``registration_id`` is validated to be a 64-character hexadecimal string.
+When creating an ``APNSDevice``, the ``registration_id`` is validated to be a 64-character or 200-character hexadecimal string. Since 2016, device tokens are to be increased from 32 bytes to 100 bytes.
 
 Routes can be added one of two ways:
 

push_notifications/api/rest_framework.py

@@ -47,9 +47,10 @@ class Meta(DeviceSerializerMixin.Meta):
 		model = APNSDevice
 
 	def validate_registration_id(self, value):
-		# iOS device tokens are 256-bit hexadecimal (64 characters)
+		# iOS device tokens are 256-bit hexadecimal (64 characters). In 2016 Apple is increasing
+		# iOS device tokens to 100 bytes hexadecimal (200 characters).
 
-		if hex_re.match(value) is None or len(value) != 64:
+		if hex_re.match(value) is None or len(value) not in (64, 200):
 			raise ValidationError("Registration ID (device token) is invalid")
 
 		return value

push_notifications/migrations/0002_auto_20160106_0850.py

@@ -0,0 +1,20 @@
+# -*- coding: utf-8 -*-
+# Generated by Django 1.9.1 on 2016-01-06 08:50
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('push_notifications', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name='apnsdevice',
+            name='registration_id',
+            field=models.CharField(max_length=200, unique=True, verbose_name='Registration ID'),
+        ),
+    ]

push_notifications/models.py

@@ -80,7 +80,7 @@ def send_message(self, message, **kwargs):
 class APNSDevice(Device):
 	device_id = models.UUIDField(verbose_name=_("Device ID"), blank=True, null=True, db_index=True,
 		help_text="UDID / UIDevice.identifierForVendor()")
-	registration_id = models.CharField(verbose_name=_("Registration ID"), max_length=64, unique=True)
+	registration_id = models.CharField(verbose_name=_("Registration ID"), max_length=200, unique=True)
 
 	objects = APNSDeviceManager()
 

tests/test_rest_framework.py

@@ -6,22 +6,38 @@
 
 class APNSDeviceSerializerTestCase(TestCase):
 	def test_validation(self):
-		# valid data - upper case
+		# valid data - 32 bytes upper case
 		serializer = APNSDeviceSerializer(data={
 			"registration_id": "AEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAE",
 			"name": "Apple iPhone 6+",
 			"device_id": "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
 		})
 		self.assertTrue(serializer.is_valid())
 
-		# valid data - lower case
+		# valid data - 32 bytes lower case
 		serializer = APNSDeviceSerializer(data={
 			"registration_id": "aeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeae",
 			"name": "Apple iPhone 6+",
 			"device_id": "ffffffffffffffffffffffffffffffff",
 		})
 		self.assertTrue(serializer.is_valid())
 
+		# valid data - 100 bytes upper case
+		serializer = APNSDeviceSerializer(data={
+			"registration_id": "AEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAEAE",
+			"name": "Apple iPhone 6+",
+			"device_id": "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
+		})
+		self.assertTrue(serializer.is_valid())
+
+		# valid data - 100 bytes lower case
+		serializer = APNSDeviceSerializer(data={
+			"registration_id": "aeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeaeae",
+			"name": "Apple iPhone 6+",
+			"device_id": "ffffffffffffffffffffffffffffffff",
+		})
+		self.assertTrue(serializer.is_valid())
+
 		# invalid data - device_id, registration_id
 		serializer = APNSDeviceSerializer(data={
 			"registration_id": "invalid device token contains no hex",
@@ -102,4 +118,3 @@ def test_device_id_validation_value_between_signed_unsigned_64b_int_maximums(sel
 			"device_id": "e87a4e72d634997c",
 		})
 		self.assertTrue(serializer.is_valid())
-