fix: handle missing filename in file upload to prevent panic (#138)

* fix: handle missing filename in file upload to prevent panic

Author: yuancjun

src/main.rs

@@ -583,8 +583,16 @@ impl MainHandler {
                             let headers = &field.headers;
                             let mut target_path = path.to_owned();
 
-                            let raw_filename = headers.filename.clone().unwrap();
-                            let filename = Path::new(&raw_filename).file_name().unwrap();
+                            let Some(raw_filename) = headers.filename.clone() else {
+                                println!("[Warning]: Skipping field with no filename");
+                                continue;
+                            };
+
+                            let Some(filename) = Path::new(&raw_filename).file_name() else {
+                                println!("[Warning]: Invalid filename: {raw_filename}");
+                                continue;
+                            };
+
                             target_path.push(filename);
                             if let Err(errno) = std::fs::File::create(target_path)
                                 .and_then(|mut file| io::copy(&mut data, &mut file))
@@ -594,7 +602,7 @@ impl MainHandler {
                                     format!("Copy file failed: {errno}"),
                                 ));
                             } else {
-                                println!("  >> File saved: {}", headers.filename.clone().unwrap());
+                                println!("  >> File saved: {raw_filename}");
                             }
                         }
                         Ok(())