From 899ea60ccdc1365e6a947e869c92dece986532ea Mon Sep 17 00:00:00 2001
From: Jörg Thalheim <joerg@thalheim.io>
Date: Sat, 23 Sep 2023 09:55:20 +0200
Subject: handle eof correctly when reading from pinentry

Just now rbw-agent will spin at 200% cores if pinentry fails, which can have various reasons.
Now it will just terminate correctly when this happens.
---
 src/pinentry.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/pinentry.rs b/src/pinentry.rs
index f7d36c7..e2a83ed 100644
--- a/src/pinentry.rs
+++ b/src/pinentry.rs
@@ -137,6 +137,14 @@ where
                 .read(&mut data[len..])
                 .await
                 .map_err(|source| Error::PinentryReadOutput { source })?;
+            if bytes == 0 {
+                return Err(Error::PinentryReadOutput {
+                    source: std::io::Error::new(
+                        std::io::ErrorKind::UnexpectedEof,
+                        "unexpected EOF",
+                    ),
+                });
+            }
             len += bytes;
         }
     }
-- 
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