mirror of
https://github.com/actix/actix-web.git
synced 2024-06-02 21:39:26 +00:00
683 lines
22 KiB
Rust
683 lines
22 KiB
Rust
use bytes::{Bytes, BytesMut};
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use encoding::EncodingRef;
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use encoding::all::UTF_8;
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use encoding::label::encoding_from_whatwg_label;
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use encoding::types::{DecoderTrap, Encoding};
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use futures::{Future, Poll, Stream};
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use http::{header, HeaderMap};
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use http_range::HttpRange;
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use mime::Mime;
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use serde::de::DeserializeOwned;
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use serde_urlencoded;
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use std::str;
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use error::{ContentTypeError, HttpRangeError, ParseError, PayloadError, UrlencodedError};
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use header::Header;
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use json::JsonBody;
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use multipart::Multipart;
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/// Trait that implements general purpose operations on http messages
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pub trait HttpMessage {
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/// Read the message headers.
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fn headers(&self) -> &HeaderMap;
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#[doc(hidden)]
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/// Get a header
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fn get_header<H: Header>(&self) -> Option<H>
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where
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Self: Sized,
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{
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if self.headers().contains_key(H::name()) {
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H::parse(self).ok()
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} else {
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None
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}
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}
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/// Read the request content type. If request does not contain
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/// *Content-Type* header, empty str get returned.
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fn content_type(&self) -> &str {
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if let Some(content_type) = self.headers().get(header::CONTENT_TYPE) {
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if let Ok(content_type) = content_type.to_str() {
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return content_type.split(';').next().unwrap().trim();
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}
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}
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""
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}
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/// Get content type encoding
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///
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/// UTF-8 is used by default, If request charset is not set.
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fn encoding(&self) -> Result<EncodingRef, ContentTypeError> {
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if let Some(mime_type) = self.mime_type()? {
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if let Some(charset) = mime_type.get_param("charset") {
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if let Some(enc) = encoding_from_whatwg_label(charset.as_str()) {
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Ok(enc)
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} else {
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Err(ContentTypeError::UnknownEncoding)
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}
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} else {
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Ok(UTF_8)
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}
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} else {
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Ok(UTF_8)
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}
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}
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/// Convert the request content type to a known mime type.
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fn mime_type(&self) -> Result<Option<Mime>, ContentTypeError> {
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if let Some(content_type) = self.headers().get(header::CONTENT_TYPE) {
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if let Ok(content_type) = content_type.to_str() {
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return match content_type.parse() {
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Ok(mt) => Ok(Some(mt)),
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Err(_) => Err(ContentTypeError::ParseError),
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};
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} else {
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return Err(ContentTypeError::ParseError);
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}
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}
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Ok(None)
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}
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/// Check if request has chunked transfer encoding
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fn chunked(&self) -> Result<bool, ParseError> {
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if let Some(encodings) = self.headers().get(header::TRANSFER_ENCODING) {
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if let Ok(s) = encodings.to_str() {
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Ok(s.to_lowercase().contains("chunked"))
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} else {
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Err(ParseError::Header)
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}
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} else {
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Ok(false)
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}
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}
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/// Parses Range HTTP header string as per RFC 2616.
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/// `size` is full size of response (file).
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fn range(&self, size: u64) -> Result<Vec<HttpRange>, HttpRangeError> {
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if let Some(range) = self.headers().get(header::RANGE) {
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HttpRange::parse(
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unsafe { str::from_utf8_unchecked(range.as_bytes()) },
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size,
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).map_err(|e| e.into())
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} else {
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Ok(Vec::new())
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}
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}
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/// Load http message body.
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///
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/// By default only 256Kb payload reads to a memory, then
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/// `PayloadError::Overflow` get returned. Use `MessageBody::limit()`
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/// method to change upper limit.
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///
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/// ## Server example
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///
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/// ```rust
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/// # extern crate bytes;
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/// # extern crate actix_web;
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/// # extern crate futures;
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/// # #[macro_use] extern crate serde_derive;
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/// use bytes::Bytes;
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/// use futures::future::Future;
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/// use actix_web::{HttpMessage, HttpRequest, HttpResponse,
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/// FutureResponse, AsyncResponder};
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///
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/// fn index(mut req: HttpRequest) -> FutureResponse<HttpResponse> {
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/// req.body() // <- get Body future
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/// .limit(1024) // <- change max size of the body to a 1kb
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/// .from_err()
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/// .and_then(|bytes: Bytes| { // <- complete body
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/// println!("==== BODY ==== {:?}", bytes);
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/// Ok(HttpResponse::Ok().into())
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/// }).responder()
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/// }
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/// # fn main() {}
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/// ```
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fn body(self) -> MessageBody<Self>
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where
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Self: Stream<Item = Bytes, Error = PayloadError> + Sized,
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{
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MessageBody::new(self)
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}
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/// Parse `application/x-www-form-urlencoded` encoded request's body.
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/// Return `UrlEncoded` future. Form can be deserialized to any type that
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/// implements `Deserialize` trait from *serde*.
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///
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/// Returns error:
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///
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/// * content type is not `application/x-www-form-urlencoded`
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/// * transfer encoding is `chunked`.
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/// * content-length is greater than 256k
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///
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/// ## Server example
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///
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/// ```rust
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/// # extern crate actix_web;
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/// # extern crate futures;
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/// # use futures::Future;
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/// # use std::collections::HashMap;
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/// use actix_web::{HttpMessage, HttpRequest, HttpResponse, FutureResponse};
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///
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/// fn index(mut req: HttpRequest) -> FutureResponse<HttpResponse> {
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/// Box::new(
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/// req.urlencoded::<HashMap<String, String>>() // <- get UrlEncoded future
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/// .from_err()
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/// .and_then(|params| { // <- url encoded parameters
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/// println!("==== BODY ==== {:?}", params);
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/// Ok(HttpResponse::Ok().into())
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/// }))
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/// }
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/// # fn main() {}
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/// ```
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fn urlencoded<T: DeserializeOwned>(self) -> UrlEncoded<Self, T>
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where
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Self: Stream<Item = Bytes, Error = PayloadError> + Sized,
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{
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UrlEncoded::new(self)
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}
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/// Parse `application/json` encoded body.
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/// Return `JsonBody<T>` future. It resolves to a `T` value.
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///
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/// Returns error:
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///
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/// * content type is not `application/json`
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/// * content length is greater than 256k
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///
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/// ## Server example
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///
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/// ```rust
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/// # extern crate actix_web;
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/// # extern crate futures;
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/// # #[macro_use] extern crate serde_derive;
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/// use actix_web::*;
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/// use futures::future::{Future, ok};
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///
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/// #[derive(Deserialize, Debug)]
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/// struct MyObj {
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/// name: String,
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/// }
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///
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/// fn index(mut req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
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/// req.json() // <- get JsonBody future
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/// .from_err()
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/// .and_then(|val: MyObj| { // <- deserialized value
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/// println!("==== BODY ==== {:?}", val);
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/// Ok(HttpResponse::Ok().into())
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/// }).responder()
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/// }
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/// # fn main() {}
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/// ```
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fn json<T: DeserializeOwned>(self) -> JsonBody<Self, T>
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where
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Self: Stream<Item = Bytes, Error = PayloadError> + Sized,
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{
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JsonBody::new(self)
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}
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/// Return stream to http payload processes as multipart.
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///
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/// Content-type: multipart/form-data;
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///
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/// ## Server example
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///
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/// ```rust
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/// # extern crate actix;
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/// # extern crate actix_web;
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/// # extern crate env_logger;
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/// # extern crate futures;
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/// # use std::str;
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/// # use actix::*;
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/// # use actix_web::*;
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/// # use futures::{Future, Stream};
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/// # use futures::future::{ok, result, Either};
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/// fn index(mut req: HttpRequest) -> Box<Future<Item=HttpResponse, Error=Error>> {
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/// req.multipart().from_err() // <- get multipart stream for current request
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/// .and_then(|item| match item { // <- iterate over multipart items
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/// multipart::MultipartItem::Field(field) => {
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/// // Field in turn is stream of *Bytes* object
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/// Either::A(field.from_err()
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/// .map(|c| println!("-- CHUNK: \n{:?}", str::from_utf8(&c)))
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/// .finish())
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/// },
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/// multipart::MultipartItem::Nested(mp) => {
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/// // Or item could be nested Multipart stream
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/// Either::B(ok(()))
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/// }
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/// })
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/// .finish() // <- Stream::finish() combinator from actix
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/// .map(|_| HttpResponse::Ok().into())
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/// .responder()
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/// }
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/// # fn main() {}
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/// ```
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fn multipart(self) -> Multipart<Self>
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where
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Self: Stream<Item = Bytes, Error = PayloadError> + Sized,
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{
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let boundary = Multipart::boundary(self.headers());
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Multipart::new(boundary, self)
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}
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}
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/// Future that resolves to a complete http message body.
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pub struct MessageBody<T> {
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limit: usize,
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req: Option<T>,
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fut: Option<Box<Future<Item = Bytes, Error = PayloadError>>>,
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}
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impl<T> MessageBody<T> {
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/// Create `RequestBody` for request.
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pub fn new(req: T) -> MessageBody<T> {
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MessageBody {
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limit: 262_144,
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req: Some(req),
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fut: None,
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}
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}
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/// Change max size of payload. By default max size is 256Kb
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pub fn limit(mut self, limit: usize) -> Self {
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self.limit = limit;
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self
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}
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}
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impl<T> Future for MessageBody<T>
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where
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T: HttpMessage + Stream<Item = Bytes, Error = PayloadError> + 'static,
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{
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type Item = Bytes;
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type Error = PayloadError;
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fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
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if let Some(req) = self.req.take() {
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if let Some(len) = req.headers().get(header::CONTENT_LENGTH) {
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if let Ok(s) = len.to_str() {
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if let Ok(len) = s.parse::<usize>() {
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if len > self.limit {
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return Err(PayloadError::Overflow);
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}
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} else {
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return Err(PayloadError::UnknownLength);
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}
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} else {
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return Err(PayloadError::UnknownLength);
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}
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}
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// future
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let limit = self.limit;
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self.fut = Some(Box::new(
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req.from_err()
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.fold(BytesMut::new(), move |mut body, chunk| {
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if (body.len() + chunk.len()) > limit {
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Err(PayloadError::Overflow)
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} else {
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body.extend_from_slice(&chunk);
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Ok(body)
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}
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})
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.map(|body| body.freeze()),
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));
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}
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self.fut
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.as_mut()
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.expect("UrlEncoded could not be used second time")
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.poll()
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}
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}
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/// Future that resolves to a parsed urlencoded values.
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pub struct UrlEncoded<T, U> {
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req: Option<T>,
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limit: usize,
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fut: Option<Box<Future<Item = U, Error = UrlencodedError>>>,
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}
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impl<T, U> UrlEncoded<T, U> {
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pub fn new(req: T) -> UrlEncoded<T, U> {
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UrlEncoded {
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req: Some(req),
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limit: 262_144,
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fut: None,
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}
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}
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/// Change max size of payload. By default max size is 256Kb
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pub fn limit(mut self, limit: usize) -> Self {
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self.limit = limit;
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self
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}
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}
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impl<T, U> Future for UrlEncoded<T, U>
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where
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T: HttpMessage + Stream<Item = Bytes, Error = PayloadError> + 'static,
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U: DeserializeOwned + 'static,
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{
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type Item = U;
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type Error = UrlencodedError;
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fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
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if let Some(req) = self.req.take() {
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if req.chunked().unwrap_or(false) {
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return Err(UrlencodedError::Chunked);
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} else if let Some(len) = req.headers().get(header::CONTENT_LENGTH) {
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if let Ok(s) = len.to_str() {
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if let Ok(len) = s.parse::<u64>() {
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if len > 262_144 {
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return Err(UrlencodedError::Overflow);
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}
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} else {
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return Err(UrlencodedError::UnknownLength);
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}
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} else {
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return Err(UrlencodedError::UnknownLength);
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}
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}
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// check content type
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if req.content_type().to_lowercase() != "application/x-www-form-urlencoded" {
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return Err(UrlencodedError::ContentType);
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}
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let encoding = req.encoding()
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.map_err(|_| UrlencodedError::ContentType)?;
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// future
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let limit = self.limit;
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let fut = req.from_err()
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.fold(BytesMut::new(), move |mut body, chunk| {
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if (body.len() + chunk.len()) > limit {
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Err(UrlencodedError::Overflow)
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} else {
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body.extend_from_slice(&chunk);
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Ok(body)
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}
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})
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.and_then(move |body| {
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let enc: *const Encoding = encoding as *const Encoding;
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if enc == UTF_8 {
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serde_urlencoded::from_bytes::<U>(&body)
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.map_err(|_| UrlencodedError::Parse)
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} else {
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let body = encoding
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.decode(&body, DecoderTrap::Strict)
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.map_err(|_| UrlencodedError::Parse)?;
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serde_urlencoded::from_str::<U>(&body)
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.map_err(|_| UrlencodedError::Parse)
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}
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});
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self.fut = Some(Box::new(fut));
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}
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self.fut
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.as_mut()
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.expect("UrlEncoded could not be used second time")
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.poll()
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use encoding::Encoding;
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use encoding::all::ISO_8859_2;
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use futures::Async;
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use http::{Method, Uri, Version};
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use httprequest::HttpRequest;
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use mime;
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use std::str::FromStr;
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use test::TestRequest;
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|
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#[test]
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fn test_content_type() {
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let req = TestRequest::with_header("content-type", "text/plain").finish();
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assert_eq!(req.content_type(), "text/plain");
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let req =
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TestRequest::with_header("content-type", "application/json; charset=utf=8")
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.finish();
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assert_eq!(req.content_type(), "application/json");
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let req = HttpRequest::default();
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assert_eq!(req.content_type(), "");
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}
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|
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#[test]
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fn test_mime_type() {
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let req = TestRequest::with_header("content-type", "application/json").finish();
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assert_eq!(req.mime_type().unwrap(), Some(mime::APPLICATION_JSON));
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let req = HttpRequest::default();
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assert_eq!(req.mime_type().unwrap(), None);
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let req =
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TestRequest::with_header("content-type", "application/json; charset=utf-8")
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.finish();
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let mt = req.mime_type().unwrap().unwrap();
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assert_eq!(mt.get_param(mime::CHARSET), Some(mime::UTF_8));
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assert_eq!(mt.type_(), mime::APPLICATION);
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assert_eq!(mt.subtype(), mime::JSON);
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}
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|
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#[test]
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fn test_mime_type_error() {
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let req = TestRequest::with_header(
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"content-type",
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"applicationadfadsfasdflknadsfklnadsfjson",
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).finish();
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assert_eq!(Err(ContentTypeError::ParseError), req.mime_type());
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}
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|
|
#[test]
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fn test_encoding() {
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let req = HttpRequest::default();
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assert_eq!(UTF_8.name(), req.encoding().unwrap().name());
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let req = TestRequest::with_header("content-type", "application/json").finish();
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assert_eq!(UTF_8.name(), req.encoding().unwrap().name());
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let req = TestRequest::with_header(
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"content-type",
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"application/json; charset=ISO-8859-2",
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).finish();
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assert_eq!(ISO_8859_2.name(), req.encoding().unwrap().name());
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}
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|
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#[test]
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fn test_encoding_error() {
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let req = TestRequest::with_header("content-type", "applicatjson").finish();
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assert_eq!(
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Some(ContentTypeError::ParseError),
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req.encoding().err()
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);
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|
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let req = TestRequest::with_header(
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"content-type",
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"application/json; charset=kkkttktk",
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).finish();
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assert_eq!(
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Some(ContentTypeError::UnknownEncoding),
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req.encoding().err()
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);
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}
|
|
|
|
#[test]
|
|
fn test_no_request_range_header() {
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let req = HttpRequest::default();
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let ranges = req.range(100).unwrap();
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assert!(ranges.is_empty());
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}
|
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|
|
#[test]
|
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fn test_request_range_header() {
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let req = TestRequest::with_header(header::RANGE, "bytes=0-4").finish();
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let ranges = req.range(100).unwrap();
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assert_eq!(ranges.len(), 1);
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assert_eq!(ranges[0].start, 0);
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assert_eq!(ranges[0].length, 5);
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}
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|
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#[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::<Info>().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::<Info>().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::<Info>().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::<Info>().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::<Info>().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"),
|
|
}
|
|
}
|
|
}
|