Actually handle all possible errors while attempting to read comicinfo.xml.

app/routes/routes.go

@@ -80,9 +80,22 @@ func Index(w http.ResponseWriter, r *http.Request) {
 					if err != nil {
 						return nil
 					}
-					cib, _ := io.ReadAll(cif)
+
-					_ = cif.Close()
+					cib, err := io.ReadAll(cif)
-					_ = xml.Unmarshal(cib, &ComicInfo)
+					if err != nil {
+						return nil
+					}
+
+					err = cif.Close()
+					if err != nil {
+						return nil
+					}
+
+					err = xml.Unmarshal(cib, &ComicInfo)
+					if err != nil {
+						return nil
+					}
+
 					c.Set(path, ComicInfo, cache.NoExpiration)
 				}
 			}
@@ -132,10 +145,21 @@ func Index(w http.ResponseWriter, r *http.Request) {
 
 	if err != nil {
 		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	err = defaults.Set(&feed)
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	data, err := xml.MarshalIndent(feed, "", "  ")
+	if err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
 	}
 
-	_ = defaults.Set(&feed)
-	data, _ := xml.MarshalIndent(feed, "", "  ")
 	http.ServeContent(w, r, "feed.xml", time.Now(), bytes.NewReader(data))
 }
 

main.go

@@ -14,7 +14,7 @@ func main() {
 	app := cli.NewApp()
 	app.Name = "go-opds-pse"
 	app.Usage = "A lightweight OPDS server with PSE support."
-	app.Version = "1.0.0+dev"
+	app.Version = "1.0.1+dev"
 	app.Flags = []cli.Flag{
 		cmd.StringFlag("manga, m", "manga", "default manga folder"),
 	}