diff --git a/CHANGES.md b/CHANGES.md index 4a1742c95..ae1d435cc 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -5,6 +5,9 @@ * `HttpServer::worker_max_blocking_threads` for setting block thread pool. [#2200] ### Changed + +* Adjusted default JSON payload limit to 2MB (from 32kb) and included size and limits in the `JsonPayloadError::Overflow` error variant. [#2162] +[#2162]: (https://github.com/actix/actix-web/pull/2162) * `ServiceResponse::error_response` now uses body type of `Body`. [#2201] * `ServiceResponse::checked_expr` now returns a `Result`. [#2201] * Update `language-tags` to `0.3`. diff --git a/src/error/mod.rs b/src/error/mod.rs index 7be9f501b..146146c71 100644 --- a/src/error/mod.rs +++ b/src/error/mod.rs @@ -93,9 +93,17 @@ impl ResponseError for UrlencodedError { #[derive(Debug, Display, Error)] #[non_exhaustive] pub enum JsonPayloadError { - /// Payload size is bigger than allowed. (default: 32kB) - #[display(fmt = "Json payload size is bigger than allowed")] - Overflow, + /// Payload size is bigger than allowed & content length header set. (default: 2MB) + #[display( + fmt = "JSON payload ({} bytes) is larger than allowed (limit: {} bytes).", + length, + limit + )] + OverflowKnownLength { length: usize, limit: usize }, + + /// Payload size is bigger than allowed but no content length header set. (default: 2MB) + #[display(fmt = "JSON payload has exceeded limit ({} bytes).", limit)] + Overflow { limit: usize }, /// Content type error #[display(fmt = "Content type error")] @@ -123,7 +131,11 @@ impl From for JsonPayloadError { impl ResponseError for JsonPayloadError { fn status_code(&self) -> StatusCode { match self { - Self::Overflow => StatusCode::PAYLOAD_TOO_LARGE, + Self::OverflowKnownLength { + length: _, + limit: _, + } => StatusCode::PAYLOAD_TOO_LARGE, + Self::Overflow { limit: _ } => StatusCode::PAYLOAD_TOO_LARGE, Self::Serialize(_) => StatusCode::INTERNAL_SERVER_ERROR, Self::Payload(err) => err.status_code(), _ => StatusCode::BAD_REQUEST, @@ -208,7 +220,13 @@ mod tests { #[test] fn test_json_payload_error() { - let resp = JsonPayloadError::Overflow.error_response(); + let resp = JsonPayloadError::OverflowKnownLength { + length: 0, + limit: 0, + } + .error_response(); + assert_eq!(resp.status(), StatusCode::PAYLOAD_TOO_LARGE); + let resp = JsonPayloadError::Overflow { limit: 0 }.error_response(); assert_eq!(resp.status(), StatusCode::PAYLOAD_TOO_LARGE); let resp = JsonPayloadError::ContentType.error_response(); assert_eq!(resp.status(), StatusCode::BAD_REQUEST); diff --git a/src/types/json.rs b/src/types/json.rs index 5762c6428..24abcecea 100644 --- a/src/types/json.rs +++ b/src/types/json.rs @@ -240,7 +240,7 @@ pub struct JsonConfig { } impl JsonConfig { - /// Set maximum accepted payload size. By default this limit is 32kB. + /// Set maximum accepted payload size. By default this limit is 2MB. pub fn limit(mut self, limit: usize) -> Self { self.limit = limit; self @@ -273,9 +273,11 @@ impl JsonConfig { } } +const DEFAULT_LIMIT: usize = 2_097_152; // 2 mb + /// Allow shared refs used as default. const DEFAULT_CONFIG: JsonConfig = JsonConfig { - limit: 32_768, // 2^15 bytes, (~32kB) + limit: DEFAULT_LIMIT, err_handler: None, content_type: None, }; @@ -349,7 +351,7 @@ where let payload = payload.take(); JsonBody::Body { - limit: 32_768, + limit: DEFAULT_LIMIT, length, payload, buf: BytesMut::with_capacity(8192), @@ -357,7 +359,7 @@ where } } - /// Set maximum accepted payload size. The default limit is 32kB. + /// Set maximum accepted payload size. The default limit is 2MB. pub fn limit(self, limit: usize) -> Self { match self { JsonBody::Body { @@ -368,7 +370,10 @@ where } => { if let Some(len) = length { if len > limit { - return JsonBody::Error(Some(JsonPayloadError::Overflow)); + return JsonBody::Error(Some(JsonPayloadError::OverflowKnownLength { + length: len, + limit, + })); } } @@ -405,8 +410,11 @@ where match res { Some(chunk) => { let chunk = chunk?; - if (buf.len() + chunk.len()) > *limit { - return Poll::Ready(Err(JsonPayloadError::Overflow)); + let buf_len = buf.len() + chunk.len(); + if buf_len > *limit { + return Poll::Ready(Err(JsonPayloadError::Overflow { + limit: *limit, + })); } else { buf.extend_from_slice(&chunk); } @@ -445,7 +453,12 @@ mod tests { fn json_eq(err: JsonPayloadError, other: JsonPayloadError) -> bool { match err { - JsonPayloadError::Overflow => matches!(other, JsonPayloadError::Overflow), + JsonPayloadError::Overflow { .. } => { + matches!(other, JsonPayloadError::Overflow { .. }) + } + JsonPayloadError::OverflowKnownLength { .. } => { + matches!(other, JsonPayloadError::OverflowKnownLength { .. }) + } JsonPayloadError::ContentType => matches!(other, JsonPayloadError::ContentType), _ => false, } @@ -538,7 +551,7 @@ mod tests { let s = Json::::from_request(&req, &mut pl).await; assert!(format!("{}", s.err().unwrap()) - .contains("Json payload size is bigger than allowed")); + .contains("JSON payload (16 bytes) is larger than allowed (limit: 10 bytes).")); let (req, mut pl) = TestRequest::default() .insert_header(( @@ -589,7 +602,30 @@ mod tests { let json = JsonBody::::new(&req, &mut pl, None) .limit(100) .await; - assert!(json_eq(json.err().unwrap(), JsonPayloadError::Overflow)); + assert!(json_eq( + json.err().unwrap(), + JsonPayloadError::OverflowKnownLength { + length: 10000, + limit: 100 + } + )); + + let (req, mut pl) = TestRequest::default() + .insert_header(( + header::CONTENT_TYPE, + header::HeaderValue::from_static("application/json"), + )) + .set_payload(Bytes::from_static(&[0u8; 1000])) + .to_http_parts(); + + let json = JsonBody::::new(&req, &mut pl, None) + .limit(100) + .await; + + assert!(json_eq( + json.err().unwrap(), + JsonPayloadError::Overflow { limit: 100 } + )); let (req, mut pl) = TestRequest::default() .insert_header(( @@ -686,6 +722,7 @@ mod tests { assert!(s.is_err()); let err_str = s.err().unwrap().to_string(); - assert!(err_str.contains("Json payload size is bigger than allowed")); + assert!(err_str + .contains("JSON payload (16 bytes) is larger than allowed (limit: 10 bytes).")); } }