Implement workaround for axios not passing Content-Length headers in …

…multipart fields

Co-authored-by: Hugo Herter <[email protected]>

src/aleph/web/controllers/storage.py

@@ -132,17 +132,11 @@ def content(self) -> Union[str, bytes]:
 
 class MultipartUploadedFile:
     _content: Optional[bytes]
+    size: int
 
-    def __init__(self, file_field: FileField):
+    def __init__(self, file_field: FileField, size: int):
         self.file_field = file_field
-
-        try:
-            content_length_str = file_field.headers["Content-Length"]
-            self.size = int(content_length_str)
-        except (KeyError, ValueError):
-            raise web.HTTPUnprocessableEntity(
-                reason="Invalid/missing Content-Length header."
-            )
+        self.size = size
         self._content = None
 
     @property
@@ -243,13 +237,18 @@ async def storage_add_file(request: web.Request):
     grace_period = config.storage.grace_period.value
 
     post = await request.post()
+    headers = request.headers
     try:
         file_field = post["file"]
     except KeyError:
         raise web.HTTPUnprocessableEntity(reason="Missing 'file' in multipart form.")
 
     if isinstance(file_field, FileField):
-        uploaded_file: UploadedFile = MultipartUploadedFile(file_field)
+        try:
+            content_length = int(headers.get("Content-Length", file_field.headers["Content-Length"]))
+            uploaded_file: UploadedFile = MultipartUploadedFile(file_field, content_length)
+        except (KeyError, ValueError):
+            raise web.HTTPUnprocessableEntity(reason="Invalid/missing Content-Length header.")
     else:
         uploaded_file = RawUploadedFile(file_field)