use bytes::{Bytes, BytesMut}; use encoding::all::UTF_8; use encoding::label::encoding_from_whatwg_label; use encoding::types::{DecoderTrap, Encoding}; use encoding::EncodingRef; use futures::{Future, Poll, Stream}; use http::{header, HeaderMap}; use http_range::HttpRange; use mime::Mime; use serde::de::DeserializeOwned; use serde_urlencoded; use std::str; use error::{ContentTypeError, HttpRangeError, ParseError, PayloadError, UrlencodedError}; use header::Header; use json::JsonBody; use multipart::Multipart; /// Trait that implements general purpose operations on http messages pub trait HttpMessage { /// Read the message headers. fn headers(&self) -> &HeaderMap; #[doc(hidden)] /// Get a header fn get_header(&self) -> Option where Self: Sized, { if self.headers().contains_key(H::name()) { H::parse(self).ok() } else { None } } /// Read the request content type. If request does not contain /// *Content-Type* header, empty str get returned. fn content_type(&self) -> &str { if let Some(content_type) = self.headers().get(header::CONTENT_TYPE) { if let Ok(content_type) = content_type.to_str() { return content_type.split(';').next().unwrap().trim(); } } "" } /// Get content type encoding /// /// UTF-8 is used by default, If request charset is not set. fn encoding(&self) -> Result { if let Some(mime_type) = self.mime_type()? { if let Some(charset) = mime_type.get_param("charset") { if let Some(enc) = encoding_from_whatwg_label(charset.as_str()) { Ok(enc) } else { Err(ContentTypeError::UnknownEncoding) } } else { Ok(UTF_8) } } else { Ok(UTF_8) } } /// Convert the request content type to a known mime type. fn mime_type(&self) -> Result, ContentTypeError> { if let Some(content_type) = self.headers().get(header::CONTENT_TYPE) { if let Ok(content_type) = content_type.to_str() { return match content_type.parse() { Ok(mt) => Ok(Some(mt)), Err(_) => Err(ContentTypeError::ParseError), }; } else { return Err(ContentTypeError::ParseError); } } Ok(None) } /// Check if request has chunked transfer encoding fn chunked(&self) -> Result { if let Some(encodings) = self.headers().get(header::TRANSFER_ENCODING) { if let Ok(s) = encodings.to_str() { Ok(s.to_lowercase().contains("chunked")) } else { Err(ParseError::Header) } } else { Ok(false) } } /// Parses Range HTTP header string as per RFC 2616. /// `size` is full size of response (file). fn range(&self, size: u64) -> Result, HttpRangeError> { if let Some(range) = self.headers().get(header::RANGE) { HttpRange::parse(unsafe { str::from_utf8_unchecked(range.as_bytes()) }, size) .map_err(|e| e.into()) } else { Ok(Vec::new()) } } /// Load http message body. /// /// By default only 256Kb payload reads to a memory, then /// `PayloadError::Overflow` get returned. Use `MessageBody::limit()` /// method to change upper limit. /// /// ## Server example /// /// ```rust /// # extern crate bytes; /// # extern crate actix_web; /// # extern crate futures; /// # #[macro_use] extern crate serde_derive; /// use bytes::Bytes; /// use futures::future::Future; /// use actix_web::{HttpMessage, HttpRequest, HttpResponse, /// FutureResponse, AsyncResponder}; /// /// fn index(mut req: HttpRequest) -> FutureResponse { /// req.body() // <- get Body future /// .limit(1024) // <- change max size of the body to a 1kb /// .from_err() /// .and_then(|bytes: Bytes| { // <- complete body /// println!("==== BODY ==== {:?}", bytes); /// Ok(HttpResponse::Ok().into()) /// }).responder() /// } /// # fn main() {} /// ``` fn body(self) -> MessageBody where Self: Stream + Sized, { MessageBody::new(self) } /// Parse `application/x-www-form-urlencoded` encoded request's body. /// Return `UrlEncoded` future. Form can be deserialized to any type that /// implements `Deserialize` trait from *serde*. /// /// Returns error: /// /// * content type is not `application/x-www-form-urlencoded` /// * transfer encoding is `chunked`. /// * content-length is greater than 256k /// /// ## Server example /// /// ```rust /// # extern crate actix_web; /// # extern crate futures; /// # use futures::Future; /// # use std::collections::HashMap; /// use actix_web::{HttpMessage, HttpRequest, HttpResponse, FutureResponse}; /// /// fn index(mut req: HttpRequest) -> FutureResponse { /// Box::new( /// req.urlencoded::>() // <- get UrlEncoded future /// .from_err() /// .and_then(|params| { // <- url encoded parameters /// println!("==== BODY ==== {:?}", params); /// Ok(HttpResponse::Ok().into()) /// })) /// } /// # fn main() {} /// ``` fn urlencoded(self) -> UrlEncoded where Self: Stream + Sized, { UrlEncoded::new(self) } /// Parse `application/json` encoded body. /// Return `JsonBody` future. It resolves to a `T` value. /// /// Returns error: /// /// * content type is not `application/json` /// * content length is greater than 256k /// /// ## Server example /// /// ```rust /// # extern crate actix_web; /// # extern crate futures; /// # #[macro_use] extern crate serde_derive; /// use actix_web::*; /// use futures::future::{Future, ok}; /// /// #[derive(Deserialize, Debug)] /// struct MyObj { /// name: String, /// } /// /// fn index(mut req: HttpRequest) -> Box> { /// req.json() // <- get JsonBody future /// .from_err() /// .and_then(|val: MyObj| { // <- deserialized value /// println!("==== BODY ==== {:?}", val); /// Ok(HttpResponse::Ok().into()) /// }).responder() /// } /// # fn main() {} /// ``` fn json(self) -> JsonBody where Self: Stream + Sized, { JsonBody::new(self) } /// Return stream to http payload processes as multipart. /// /// Content-type: multipart/form-data; /// /// ## Server example /// /// ```rust /// # extern crate actix; /// # extern crate actix_web; /// # extern crate env_logger; /// # extern crate futures; /// # use std::str; /// # use actix::*; /// # use actix_web::*; /// # use futures::{Future, Stream}; /// # use futures::future::{ok, result, Either}; /// fn index(mut req: HttpRequest) -> Box> { /// req.multipart().from_err() // <- get multipart stream for current request /// .and_then(|item| match item { // <- iterate over multipart items /// multipart::MultipartItem::Field(field) => { /// // Field in turn is stream of *Bytes* object /// Either::A(field.from_err() /// .map(|c| println!("-- CHUNK: \n{:?}", str::from_utf8(&c))) /// .finish()) /// }, /// multipart::MultipartItem::Nested(mp) => { /// // Or item could be nested Multipart stream /// Either::B(ok(())) /// } /// }) /// .finish() // <- Stream::finish() combinator from actix /// .map(|_| HttpResponse::Ok().into()) /// .responder() /// } /// # fn main() {} /// ``` fn multipart(self) -> Multipart where Self: Stream + Sized, { let boundary = Multipart::boundary(self.headers()); Multipart::new(boundary, self) } } /// Future that resolves to a complete http message body. pub struct MessageBody { limit: usize, req: Option, fut: Option>>, } impl MessageBody { /// Create `RequestBody` for request. pub fn new(req: T) -> MessageBody { MessageBody { limit: 262_144, req: Some(req), fut: None, } } /// Change max size of payload. By default max size is 256Kb pub fn limit(mut self, limit: usize) -> Self { self.limit = limit; self } } impl Future for MessageBody where T: HttpMessage + Stream + 'static, { type Item = Bytes; type Error = PayloadError; fn poll(&mut self) -> Poll { if let Some(req) = self.req.take() { if let Some(len) = req.headers().get(header::CONTENT_LENGTH) { if let Ok(s) = len.to_str() { if let Ok(len) = s.parse::() { if len > self.limit { return Err(PayloadError::Overflow); } } else { return Err(PayloadError::UnknownLength); } } else { return Err(PayloadError::UnknownLength); } } // future let limit = self.limit; self.fut = Some(Box::new( req.from_err() .fold(BytesMut::new(), move |mut body, chunk| { if (body.len() + chunk.len()) > limit { Err(PayloadError::Overflow) } else { body.extend_from_slice(&chunk); Ok(body) } }) .map(|body| body.freeze()), )); } self.fut.as_mut().expect("UrlEncoded could not be used second time").poll() } } /// Future that resolves to a parsed urlencoded values. pub struct UrlEncoded { req: Option, limit: usize, fut: Option>>, } impl UrlEncoded { pub fn new(req: T) -> UrlEncoded { UrlEncoded { req: Some(req), limit: 262_144, fut: None, } } /// Change max size of payload. By default max size is 256Kb pub fn limit(mut self, limit: usize) -> Self { self.limit = limit; self } } impl Future for UrlEncoded where T: HttpMessage + Stream + 'static, U: DeserializeOwned + 'static, { type Item = U; type Error = UrlencodedError; fn poll(&mut self) -> Poll { if let Some(req) = self.req.take() { if req.chunked().unwrap_or(false) { return Err(UrlencodedError::Chunked); } else if let Some(len) = req.headers().get(header::CONTENT_LENGTH) { if let Ok(s) = len.to_str() { if let Ok(len) = s.parse::() { if len > 262_144 { return Err(UrlencodedError::Overflow); } } else { return Err(UrlencodedError::UnknownLength); } } else { return Err(UrlencodedError::UnknownLength); } } // check content type if req.content_type().to_lowercase() != "application/x-www-form-urlencoded" { return Err(UrlencodedError::ContentType); } let encoding = req.encoding().map_err(|_| UrlencodedError::ContentType)?; // future let limit = self.limit; let fut = req.from_err() .fold(BytesMut::new(), move |mut body, chunk| { if (body.len() + chunk.len()) > limit { Err(UrlencodedError::Overflow) } else { body.extend_from_slice(&chunk); Ok(body) } }) .and_then(move |body| { let enc: *const Encoding = encoding as *const Encoding; if enc == UTF_8 { serde_urlencoded::from_bytes::(&body) .map_err(|_| UrlencodedError::Parse) } else { let body = encoding .decode(&body, DecoderTrap::Strict) .map_err(|_| UrlencodedError::Parse)?; serde_urlencoded::from_str::(&body) .map_err(|_| UrlencodedError::Parse) } }); self.fut = Some(Box::new(fut)); } self.fut.as_mut().expect("UrlEncoded could not be used second time").poll() } } #[cfg(test)] mod tests { use super::*; use encoding::all::ISO_8859_2; use encoding::Encoding; use futures::Async; use http::{Method, Uri, Version}; use httprequest::HttpRequest; use mime; use std::str::FromStr; use test::TestRequest; #[test] fn test_content_type() { let req = TestRequest::with_header("content-type", "text/plain").finish(); assert_eq!(req.content_type(), "text/plain"); let req = TestRequest::with_header("content-type", "application/json; charset=utf=8") .finish(); assert_eq!(req.content_type(), "application/json"); let req = HttpRequest::default(); assert_eq!(req.content_type(), ""); } #[test] fn test_mime_type() { let req = TestRequest::with_header("content-type", "application/json").finish(); assert_eq!(req.mime_type().unwrap(), Some(mime::APPLICATION_JSON)); let req = HttpRequest::default(); assert_eq!(req.mime_type().unwrap(), None); let req = TestRequest::with_header("content-type", "application/json; charset=utf-8") .finish(); let mt = req.mime_type().unwrap().unwrap(); assert_eq!(mt.get_param(mime::CHARSET), Some(mime::UTF_8)); assert_eq!(mt.type_(), mime::APPLICATION); assert_eq!(mt.subtype(), mime::JSON); } #[test] fn test_mime_type_error() { let req = TestRequest::with_header( "content-type", "applicationadfadsfasdflknadsfklnadsfjson", ).finish(); assert_eq!(Err(ContentTypeError::ParseError), req.mime_type()); } #[test] fn test_encoding() { let req = HttpRequest::default(); assert_eq!(UTF_8.name(), req.encoding().unwrap().name()); let req = TestRequest::with_header("content-type", "application/json").finish(); assert_eq!(UTF_8.name(), req.encoding().unwrap().name()); let req = TestRequest::with_header( "content-type", "application/json; charset=ISO-8859-2", ).finish(); assert_eq!(ISO_8859_2.name(), req.encoding().unwrap().name()); } #[test] fn test_encoding_error() { let req = TestRequest::with_header("content-type", "applicatjson").finish(); assert_eq!(Some(ContentTypeError::ParseError), req.encoding().err()); let req = TestRequest::with_header( "content-type", "application/json; charset=kkkttktk", ).finish(); assert_eq!(Some(ContentTypeError::UnknownEncoding), req.encoding().err()); } #[test] fn test_no_request_range_header() { let req = HttpRequest::default(); let ranges = req.range(100).unwrap(); assert!(ranges.is_empty()); } #[test] fn test_request_range_header() { let req = TestRequest::with_header(header::RANGE, "bytes=0-4").finish(); let ranges = req.range(100).unwrap(); assert_eq!(ranges.len(), 1); assert_eq!(ranges[0].start, 0); assert_eq!(ranges[0].length, 5); } #[test] fn test_chunked() { let req = HttpRequest::default(); assert!(!req.chunked().unwrap()); let req = TestRequest::with_header(header::TRANSFER_ENCODING, "chunked").finish(); assert!(req.chunked().unwrap()); let mut headers = HeaderMap::new(); let s = unsafe { str::from_utf8_unchecked(b"some va\xadscc\xacas0xsdasdlue".as_ref()) }; headers.insert( header::TRANSFER_ENCODING, header::HeaderValue::from_str(s).unwrap(), ); let req = HttpRequest::new( Method::GET, Uri::from_str("/").unwrap(), Version::HTTP_11, headers, None, ); assert!(req.chunked().is_err()); } impl PartialEq for UrlencodedError { fn eq(&self, other: &UrlencodedError) -> bool { match *self { UrlencodedError::Chunked => match *other { UrlencodedError::Chunked => true, _ => false, }, UrlencodedError::Overflow => match *other { UrlencodedError::Overflow => true, _ => false, }, UrlencodedError::UnknownLength => match *other { UrlencodedError::UnknownLength => true, _ => false, }, UrlencodedError::ContentType => match *other { UrlencodedError::ContentType => true, _ => false, }, _ => false, } } } #[derive(Deserialize, Debug, PartialEq)] struct Info { hello: String, } #[test] fn test_urlencoded_error() { let req = TestRequest::with_header(header::TRANSFER_ENCODING, "chunked").finish(); assert_eq!( req.urlencoded::().poll().err().unwrap(), UrlencodedError::Chunked ); let req = TestRequest::with_header( header::CONTENT_TYPE, "application/x-www-form-urlencoded", ).header(header::CONTENT_LENGTH, "xxxx") .finish(); assert_eq!( req.urlencoded::().poll().err().unwrap(), UrlencodedError::UnknownLength ); let req = TestRequest::with_header( header::CONTENT_TYPE, "application/x-www-form-urlencoded", ).header(header::CONTENT_LENGTH, "1000000") .finish(); assert_eq!( req.urlencoded::().poll().err().unwrap(), UrlencodedError::Overflow ); let req = TestRequest::with_header(header::CONTENT_TYPE, "text/plain") .header(header::CONTENT_LENGTH, "10") .finish(); assert_eq!( req.urlencoded::().poll().err().unwrap(), UrlencodedError::ContentType ); } #[test] fn test_urlencoded() { let mut req = TestRequest::with_header( header::CONTENT_TYPE, "application/x-www-form-urlencoded", ).header(header::CONTENT_LENGTH, "11") .finish(); req.payload_mut().unread_data(Bytes::from_static(b"hello=world")); let result = req.urlencoded::().poll().ok().unwrap(); assert_eq!( result, Async::Ready(Info { hello: "world".to_owned() }) ); let mut req = TestRequest::with_header( header::CONTENT_TYPE, "application/x-www-form-urlencoded; charset=utf-8", ).header(header::CONTENT_LENGTH, "11") .finish(); req.payload_mut().unread_data(Bytes::from_static(b"hello=world")); let result = req.urlencoded().poll().ok().unwrap(); assert_eq!( result, Async::Ready(Info { hello: "world".to_owned() }) ); } #[test] fn test_message_body() { let req = TestRequest::with_header(header::CONTENT_LENGTH, "xxxx").finish(); match req.body().poll().err().unwrap() { PayloadError::UnknownLength => (), _ => unreachable!("error"), } let req = TestRequest::with_header(header::CONTENT_LENGTH, "1000000").finish(); match req.body().poll().err().unwrap() { PayloadError::Overflow => (), _ => unreachable!("error"), } let mut req = HttpRequest::default(); req.payload_mut().unread_data(Bytes::from_static(b"test")); match req.body().poll().ok().unwrap() { Async::Ready(bytes) => assert_eq!(bytes, Bytes::from_static(b"test")), _ => unreachable!("error"), } let mut req = HttpRequest::default(); req.payload_mut().unread_data(Bytes::from_static(b"11111111111111")); match req.body().limit(5).poll().err().unwrap() { PayloadError::Overflow => (), _ => unreachable!("error"), } } }