From d83cb253794abf28f0ca397917906c4dc881e638 Mon Sep 17 00:00:00 2001
From: Ilia Pozdnyakov <iliazeus@proton.me>
Date: Mon, 14 Oct 2024 11:35:45 +0500
Subject: [PATCH] ignore unexpected eofs when checking iso magic bytes

---
 src/iso/iso_type.rs | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/iso/iso_type.rs b/src/iso/iso_type.rs
index 9349641..4e1ab68 100644
--- a/src/iso/iso_type.rs
+++ b/src/iso/iso_type.rs
@@ -47,10 +47,13 @@ impl IsoType {
 
     fn check<R: Read + Seek>(mut reader: R, iso_type: IsoType) -> Result<bool, Error> {
         let mut buf = [0_u8; 20];
-
-        reader.seek(SeekFrom::Start(0x20 * SECTOR_SIZE + iso_type.root_offset()))?;
-        reader.read_exact(&mut buf)?;
-
-        Ok(buf == "MICROSOFT*XBOX*MEDIA".as_bytes())
+        match reader
+            .seek(SeekFrom::Start(0x20 * SECTOR_SIZE + iso_type.root_offset()))
+            .and_then(|_| reader.read_exact(&mut buf))
+        {
+            Ok(_) => Ok(&buf == b"MICROSOFT*XBOX*MEDIA"),
+            Err(e) if e.kind() == std::io::ErrorKind::UnexpectedEof => Ok(false),
+            Err(e) => Err(e.into()),
+        }
     }
 }