From b121971fba9f24ade237698ee292e26b7281c2bf Mon Sep 17 00:00:00 2001
From: Jean-Paul Calderone <exarkun@twistedmatrix.com>
Date: Mon, 9 Mar 2020 16:50:19 -0400
Subject: [PATCH] Try to get more information
---
src/_zkapauthorizer/_storage_server.py | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/_zkapauthorizer/_storage_server.py b/src/_zkapauthorizer/_storage_server.py
index c06dea9..d49939d 100644
--- a/src/_zkapauthorizer/_storage_server.py
+++ b/src/_zkapauthorizer/_storage_server.py
@@ -509,6 +509,12 @@ def get_storage_index_share_size(sharepath):
"""
with open(sharepath) as share_file:
share_data_length_bytes = share_file.read(8)[4:]
+ if len(share_data_length_bytes) != 4:
+ raise ValueError(
+ "Tried to read 4 bytes of share data length from share, got {!r} instead.".format(
+ share_data_length_bytes,
+ ),
+ )
(share_data_length,) = unpack('>L', share_data_length_bytes)
return share_data_length
--
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