def get(self, request, signature, image_id, filter_spec, slug):
if not verify_signature(
signature.encode(), image_id, filter_spec, key=self.key):
raise PermissionDenied
image = get_object_or_404(self.model, id=image_id, slug=slug)
# Get/generate the rendition
try:
rendition = image.get_rendition(filter_spec)
except SourceImageIOError:
return HttpResponse("Source image file not found",
content_type='text/plain',
status=410)
except InvalidFilterSpecError:
return HttpResponse("Invalid filter spec: " + filter_spec,
content_type='text/plain',
status=400)
return getattr(self, self.action)(rendition)
def test_signature_changes_on_filter_spec(self):
self.assertFalse(
verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 100,
'fill-800x700'))
def test_signature_changes_on_image_id(self):
self.assertFalse(
verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 200,
'fill-800x600'))
def test_signature_verification(self):
self.assertTrue(
verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 100,
'fill-800x600'))
def test_signature_changes_on_filter_spec(self):
self.assertFalse(verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 100, 'fill-800x700'))
def test_signature_changes_on_image_id(self):
self.assertFalse(verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 200, 'fill-800x600'))
def test_signature_verification(self):
self.assertTrue(verify_signature(b'xnZOzQyUg6pkfciqcfRJRosOrGg=', 100, 'fill-800x600'))