From f533b2a0ecdbe4ebc763c1d9eb0abf1d5b541e7d Mon Sep 17 00:00:00 2001
From: Mario Reder <mreder1289@gmail.com>
Date: Tue, 27 Jul 2021 06:36:39 +0200
Subject: [PATCH] return error on empty header

---
 src/course2.rs | 5 +++++
 src/errors.rs  | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/src/course2.rs b/src/course2.rs
index bb1910a..951b1d5 100644
--- a/src/course2.rs
+++ b/src/course2.rs
@@ -511,6 +511,11 @@ impl Course2 {
         };
 
         let header = Course2::get_course_header(&data)?;
+        if let Some(header) = &header.as_ref() {
+            if header.title.is_empty() {
+                return Err(Error::Smm2Error(Smm2Error::HeaderDataEmpty));
+            }
+        }
         let course_area = Course2::get_course_area(&data, 0)?;
         let course_sub_area = Course2::get_course_area(&data, 1)?;
 
diff --git a/src/errors.rs b/src/errors.rs
index 4b8f8cb..cab7c2d 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -93,6 +93,8 @@ pub enum Smm2Error {
     ConvertFromBuffer,
     #[error("String too long. Expected max length <= 75. Receiced: {0}")]
     StringTooLong(usize),
+    #[error("Header data seems to be empty")]
+    HeaderDataEmpty,
 }
 
 #[cfg(feature = "save")]