fix: Fix attachment upload size

src/handlers/attachments.rs

@@ -61,10 +61,9 @@ pub async fn upload_attachment(
     axum::Extension(_current_user): axum::Extension<User>,
     mut multipart: Multipart,
 ) -> Result<Response, AppError> {
-    while let Some(field) = multipart.next_field().await.map_err(|e| AppError::from(anyhow::anyhow!(e)))? {
+    while let Some(mut field) = multipart.next_field().await.map_err(|e| AppError::from(anyhow::anyhow!(e)))? {
         let filename = field.file_name().unwrap_or("unknown").to_string();
         let content_type = field.content_type().unwrap_or("application/octet-stream").to_string();
-        let data = field.bytes().await.map_err(|e| AppError::from(anyhow::anyhow!(e)))?;
 
         let id: String = rand::rng()
             .sample_iter(&Alphanumeric)
@@ -72,19 +71,44 @@ pub async fn upload_attachment(
             .map(char::from)
             .collect();
 
-        let processed_data = if content_type.starts_with("image/") {
-            process_image(&data, &content_type).await.unwrap_or(data.to_vec())
-        } else if content_type.starts_with("video/") {
-            process_video(&data).await.unwrap_or(data.to_vec())
-        } else {
-            data.to_vec()
-        };
-
-        let size = processed_data.len() as i64;
         let file_path = PathBuf::from("attachments").join(&id);
         
-        fs::write(&file_path, &processed_data).await
+        // 1. Stream everything to disk directly to avoid OOM for 5GB+ files
-            .context("Failed to write attachment to disk")?;
+        use tokio::io::AsyncWriteExt;
+        let mut file = match tokio::fs::File::create(&file_path).await {
+            Ok(f) => f,
+            Err(e) => return Err(AppError::from(anyhow::anyhow!("Failed to create file: {}", e))),
+        };
+
+        let mut size = 0i64;
+        while let Some(chunk) = field.chunk().await.map_err(|e| AppError::from(anyhow::anyhow!(e)))? {
+            file.write_all(&chunk).await.map_err(|e| AppError::from(anyhow::anyhow!("Failed to write chunk: {}", e)))?;
+            size += chunk.len() as i64;
+        }
+        
+        file.flush().await.map_err(|e| AppError::from(anyhow::anyhow!("Failed to flush: {}", e)))?;
+        drop(file);
+
+        // 2. Process image/video in place if needed
+        if content_type.starts_with("image/") {
+            let data = fs::read(&file_path).await.context("Failed to read image")?;
+            if let Ok(processed_data) = process_image(&data, &content_type).await {
+                fs::write(&file_path, &processed_data).await.context("Failed to overwrite image")?;
+                size = processed_data.len() as i64;
+            }
+        } else if content_type.starts_with("video/") {
+            let p_buf = file_path.clone();
+            let _ = tokio::task::spawn_blocking(move || {
+                if let Ok(probed) = lofty::probe::Probe::open(&p_buf) {
+                    if let Ok(mut video_file) = probed.read() {
+                        video_file.clear(); // Clear all tags
+                        let _ = video_file.save_to_path(&p_buf, lofty::config::WriteOptions::default());
+                    }
+                }
+            }).await;
+            
+            size = fs::metadata(&file_path).await.context("Failed to get size")?.len() as i64;
+        }
 
         sqlx::query("INSERT INTO attachments (id, filename, content_type, size, created_at) VALUES (?, ?, ?, ?, ?)")
             .bind(&id)
@@ -166,19 +190,3 @@ async fn process_image(data: &[u8], content_type: &str) -> Result<Vec<u8>> {
     img.write_to(&mut out, format).context("Failed to re-encode image (stripping metadata)")?;
     Ok(out.into_inner())
 }
-
-async fn process_video(data: &[u8]) -> Result<Vec<u8>> {
-    // Lofty can remove tags from various formats
-    let mut cursor = Cursor::new(data.to_vec());
-    if let Ok(probed) = lofty::probe::Probe::new(&mut cursor).guess_file_type() {
-        if let Ok(mut file) = probed.read() {
-            file.clear();
-            // We need to save it back. Lofty modify the file in place if it's a file but here we have a cursor.
-            let mut out = Cursor::new(Vec::new());
-            if file.save_to(&mut out, lofty::config::WriteOptions::default()).is_ok() {
-                return Ok(out.into_inner());
-            }
-        }
-    }
-    Ok(data.to_vec())
-}

src/main.rs

@@ -120,6 +120,7 @@ async fn main() {
         .route("/__attachments/{id}", get(handlers::attachments::serve_attachment))
         .nest("/__dungeon", handlers::router(&app_state)) // I'll create a single `handlers::router`
         .with_state(app_state.clone())
+        .layer(axum::extract::DefaultBodyLimit::disable())
         .layer(tower_http::trace::TraceLayer::new_for_http());
 
     let listener = TcpListener::bind(&addr).await.unwrap();