feat: v1.3.4 return error codes

src/cmd_chall.rs

@@ -85,6 +85,7 @@ impl Command for CommandImpl {
             }
         } else {
             warning!("YubiKey not found");
+            return Ok(Some(1));
         }
 
         Ok(None)

src/cmd_challconfig.rs

@@ -58,6 +58,7 @@ impl Command for CommandImpl {
             }
         } else {
             warning!("YubiKey not found");
+            return Ok(Some(1));
         }
 
         Ok(None)

src/main.rs

@@ -42,8 +42,10 @@ impl DefaultCommandImpl {
 }
 
 fn main() {
-    if let Err(e) = inner_main() {
-        failure_and_exit!("Run cli error: {}", e);
+    match inner_main() {
+        Err(e) => failure_and_exit!("Run cli error: {}", e),
+        Ok(Some(code)) => std::process::exit(code),
+        Ok(None) => (),
     }
 }