mirror of
https://github.com/fafhrd91/actix-web
synced 2024-11-28 10:02:38 +01:00
796 lines
21 KiB
Rust
796 lines
21 KiB
Rust
use std::marker::PhantomData;
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use std::ops::{Deref, DerefMut};
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use std::rc::Rc;
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use std::{fmt, str};
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use bytes::Bytes;
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use encoding::all::UTF_8;
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use encoding::types::{DecoderTrap, Encoding};
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use futures::{Async, Future, Poll};
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use mime::Mime;
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use serde::de::{self, DeserializeOwned};
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use serde_urlencoded;
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use de::PathDeserializer;
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use error::{Error, ErrorBadRequest, ErrorNotFound, UrlencodedError};
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use handler::{AsyncResult, FromRequest};
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use httpmessage::{HttpMessage, MessageBody, UrlEncoded};
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use httprequest::HttpRequest;
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/// Extract typed information from the request's path.
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///
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/// ## 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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/// use actix_web::{http, App, Path, Result};
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///
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/// /// extract path info from "/{username}/{count}/index.html" url
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/// /// {username} - deserializes to a String
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/// /// {count} - - deserializes to a u32
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/// fn index(info: Path<(String, u32)>) -> Result<String> {
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/// Ok(format!("Welcome {}! {}", info.0, info.1))
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/// }
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///
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/// fn main() {
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/// let app = App::new().resource(
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/// "/{username}/{count}/index.html", // <- define path parameters
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/// |r| r.method(http::Method::GET).with(index),
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/// ); // <- use `with` extractor
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/// }
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/// ```
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///
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/// It is possible to extract path information to a specific type that
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/// implements `Deserialize` trait from *serde*.
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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 actix_web::{http, App, Path, Result};
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///
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/// #[derive(Deserialize)]
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/// struct Info {
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/// username: String,
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/// }
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///
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/// /// extract path info using serde
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/// fn index(info: Path<Info>) -> Result<String> {
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/// Ok(format!("Welcome {}!", info.username))
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/// }
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///
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/// fn main() {
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/// let app = App::new().resource(
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/// "/{username}/index.html", // <- define path parameters
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/// |r| r.method(http::Method::GET).with(index),
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/// ); // <- use `with` extractor
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/// }
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/// ```
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pub struct Path<T> {
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inner: T,
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}
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impl<T> AsRef<T> for Path<T> {
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fn as_ref(&self) -> &T {
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&self.inner
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}
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}
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impl<T> Deref for Path<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.inner
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}
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}
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impl<T> DerefMut for Path<T> {
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fn deref_mut(&mut self) -> &mut T {
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&mut self.inner
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}
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}
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impl<T> Path<T> {
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/// Deconstruct to an inner value
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pub fn into_inner(self) -> T {
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self.inner
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}
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}
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impl<T, S> FromRequest<S> for Path<T>
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where
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T: DeserializeOwned,
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{
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type Config = ();
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type Result = Result<Self, Error>;
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#[inline]
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fn from_request(req: &HttpRequest<S>, _: &Self::Config) -> Self::Result {
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let req = req.clone();
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de::Deserialize::deserialize(PathDeserializer::new(&req))
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.map_err(ErrorNotFound)
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.map(|inner| Path { inner })
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}
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}
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impl<T: fmt::Debug> fmt::Debug for Path<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.inner.fmt(f)
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}
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}
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impl<T: fmt::Display> fmt::Display for Path<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.inner.fmt(f)
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}
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}
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/// Extract typed information from from the request's query.
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///
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/// ## 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 actix_web::{App, Query, http};
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///
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///
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///#[derive(Debug, Deserialize)]
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///pub enum ResponseType {
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/// Token,
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/// Code
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///}
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///
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///#[derive(Deserialize)]
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///pub struct AuthRequest {
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/// id: u64,
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/// response_type: ResponseType,
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///}
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///
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/// // use `with` extractor for query info
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/// // this handler get called only if request's query contains `username` field
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/// // The correct request for this handler would be `/index.html?id=64&response_type=Code"`
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/// fn index(info: Query<AuthRequest>) -> String {
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/// format!("Authorization request for client with id={} and type={:?}!", info.id, info.response_type)
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/// }
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///
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/// fn main() {
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/// let app = App::new().resource(
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/// "/index.html",
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/// |r| r.method(http::Method::GET).with(index)); // <- use `with` extractor
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/// }
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/// ```
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pub struct Query<T>(T);
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impl<T> Deref for Query<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.0
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}
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}
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impl<T> DerefMut for Query<T> {
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fn deref_mut(&mut self) -> &mut T {
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&mut self.0
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}
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}
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impl<T> Query<T> {
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/// Deconstruct to a inner value
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pub fn into_inner(self) -> T {
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self.0
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}
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}
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impl<T, S> FromRequest<S> for Query<T>
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where
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T: de::DeserializeOwned,
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{
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type Config = ();
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type Result = Result<Self, Error>;
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#[inline]
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fn from_request(req: &HttpRequest<S>, _: &Self::Config) -> Self::Result {
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serde_urlencoded::from_str::<T>(req.query_string())
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.map_err(|e| e.into())
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.map(Query)
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}
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}
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impl<T: fmt::Debug> fmt::Debug for Query<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.0.fmt(f)
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}
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}
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impl<T: fmt::Display> fmt::Display for Query<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.0.fmt(f)
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}
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}
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/// Extract typed information from the request's body.
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///
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/// To extract typed information from request's body, the type `T` must
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/// implement the `Deserialize` trait from *serde*.
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///
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/// [**FormConfig**](dev/struct.FormConfig.html) allows to configure extraction
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/// process.
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///
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/// ## Example
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///
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/// ```rust
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/// # extern crate actix_web;
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/// #[macro_use] extern crate serde_derive;
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/// use actix_web::{App, Form, Result};
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///
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/// #[derive(Deserialize)]
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/// struct FormData {
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/// username: String,
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/// }
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///
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/// /// extract form data using serde
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/// /// this handler get called only if content type is *x-www-form-urlencoded*
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/// /// and content of the request could be deserialized to a `FormData` struct
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/// fn index(form: Form<FormData>) -> Result<String> {
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/// Ok(format!("Welcome {}!", form.username))
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/// }
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/// # fn main() {}
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/// ```
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pub struct Form<T>(pub T);
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impl<T> Form<T> {
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/// Deconstruct to an inner value
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pub fn into_inner(self) -> T {
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self.0
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}
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}
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impl<T> Deref for Form<T> {
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type Target = T;
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fn deref(&self) -> &T {
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&self.0
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}
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}
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impl<T> DerefMut for Form<T> {
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fn deref_mut(&mut self) -> &mut T {
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&mut self.0
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}
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}
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impl<T, S> FromRequest<S> for Form<T>
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where
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T: DeserializeOwned + 'static,
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S: 'static,
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{
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type Config = FormConfig<S>;
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type Result = Box<Future<Item = Self, Error = Error>>;
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#[inline]
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fn from_request(req: &HttpRequest<S>, cfg: &Self::Config) -> Self::Result {
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let req2 = req.clone();
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let err = Rc::clone(&cfg.ehandler);
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Box::new(
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UrlEncoded::new(req)
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.limit(cfg.limit)
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.map_err(move |e| (*err)(e, &req2))
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.map(Form),
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)
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}
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}
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impl<T: fmt::Debug> fmt::Debug for Form<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.0.fmt(f)
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}
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}
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impl<T: fmt::Display> fmt::Display for Form<T> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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self.0.fmt(f)
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}
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}
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/// Form extractor configuration
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///
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/// ```rust
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/// # extern crate actix_web;
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/// #[macro_use] extern crate serde_derive;
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/// use actix_web::{http, App, Form, Result};
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///
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/// #[derive(Deserialize)]
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/// struct FormData {
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/// username: String,
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/// }
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///
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/// /// extract form data using serde.
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/// /// custom configuration is used for this handler, max payload size is 4k
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/// fn index(form: Form<FormData>) -> Result<String> {
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/// Ok(format!("Welcome {}!", form.username))
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/// }
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///
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/// fn main() {
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/// let app = App::new().resource(
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/// "/index.html",
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/// |r| {
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/// r.method(http::Method::GET)
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/// // register form handler and change form extractor configuration
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/// .with_config(index, |cfg| {cfg.limit(4096);})
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/// },
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/// );
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/// }
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/// ```
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pub struct FormConfig<S> {
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limit: usize,
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ehandler: Rc<Fn(UrlencodedError, &HttpRequest<S>) -> Error>,
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}
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impl<S> FormConfig<S> {
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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) -> &mut Self {
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self.limit = limit;
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self
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}
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/// Set custom error handler
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pub fn error_handler<F>(&mut self, f: F) -> &mut Self
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where
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F: Fn(UrlencodedError, &HttpRequest<S>) -> Error + 'static,
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{
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self.ehandler = Rc::new(f);
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self
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}
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}
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impl<S> Default for FormConfig<S> {
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fn default() -> Self {
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FormConfig {
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limit: 262_144,
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ehandler: Rc::new(|e, _| e.into()),
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}
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}
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}
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/// Request payload extractor.
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///
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/// Loads request's payload and construct Bytes instance.
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///
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/// [**PayloadConfig**](dev/struct.PayloadConfig.html) allows to configure
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/// extraction process.
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///
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/// ## 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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/// use actix_web::{http, App, Result};
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///
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/// /// extract text data from request
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/// fn index(body: bytes::Bytes) -> Result<String> {
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/// Ok(format!("Body {:?}!", body))
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/// }
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///
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/// fn main() {
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/// let app = App::new()
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/// .resource("/index.html", |r| r.method(http::Method::GET).with(index));
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/// }
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/// ```
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impl<S: 'static> FromRequest<S> for Bytes {
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type Config = PayloadConfig;
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type Result = Result<Box<Future<Item = Self, Error = Error>>, Error>;
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#[inline]
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fn from_request(req: &HttpRequest<S>, cfg: &Self::Config) -> Self::Result {
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// check content-type
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cfg.check_mimetype(req)?;
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Ok(Box::new(MessageBody::new(req).limit(cfg.limit).from_err()))
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}
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}
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/// Extract text information from the request's body.
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///
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/// Text extractor automatically decode body according to the request's charset.
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///
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/// [**PayloadConfig**](dev/struct.PayloadConfig.html) allows to configure
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/// extraction process.
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///
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/// ## Example
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///
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/// ```rust
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/// # extern crate actix_web;
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/// use actix_web::{http, App, Result};
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///
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/// /// extract text data from request
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/// fn index(body: String) -> Result<String> {
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/// Ok(format!("Body {}!", body))
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/// }
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///
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/// fn main() {
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/// let app = App::new().resource("/index.html", |r| {
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/// r.method(http::Method::GET)
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/// .with_config(index, |cfg| { // <- register handler with extractor params
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/// cfg.limit(4096); // <- limit size of the payload
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/// })
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/// });
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/// }
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/// ```
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impl<S: 'static> FromRequest<S> for String {
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type Config = PayloadConfig;
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type Result = Result<Box<Future<Item = String, Error = Error>>, Error>;
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#[inline]
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fn from_request(req: &HttpRequest<S>, cfg: &Self::Config) -> Self::Result {
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// check content-type
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cfg.check_mimetype(req)?;
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// check charset
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let encoding = req.encoding()?;
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Ok(Box::new(
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MessageBody::new(req)
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.limit(cfg.limit)
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.from_err()
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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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Ok(str::from_utf8(body.as_ref())
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.map_err(|_| ErrorBadRequest("Can not decode body"))?
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.to_owned())
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} else {
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Ok(encoding
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.decode(&body, DecoderTrap::Strict)
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.map_err(|_| ErrorBadRequest("Can not decode body"))?)
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}
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}),
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))
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}
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}
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/// Payload configuration for request's payload.
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pub struct PayloadConfig {
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limit: usize,
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mimetype: Option<Mime>,
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}
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impl PayloadConfig {
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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) -> &mut Self {
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self.limit = limit;
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self
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}
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/// Set required mime-type of the request. By default mime type is not
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/// enforced.
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pub fn mimetype(&mut self, mt: Mime) -> &mut Self {
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self.mimetype = Some(mt);
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self
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}
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fn check_mimetype<S>(&self, req: &HttpRequest<S>) -> Result<(), Error> {
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// check content-type
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if let Some(ref mt) = self.mimetype {
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match req.mime_type() {
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Ok(Some(ref req_mt)) => {
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if mt != req_mt {
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return Err(ErrorBadRequest("Unexpected Content-Type"));
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}
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}
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Ok(None) => {
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return Err(ErrorBadRequest("Content-Type is expected"));
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}
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Err(err) => {
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return Err(err.into());
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}
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}
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}
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Ok(())
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}
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}
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|
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impl Default for PayloadConfig {
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fn default() -> Self {
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PayloadConfig {
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limit: 262_144,
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mimetype: None,
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}
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}
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}
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|
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macro_rules! tuple_from_req ({$fut_type:ident, $(($n:tt, $T:ident)),+} => {
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|
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/// FromRequest implementation for tuple
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impl<S, $($T: FromRequest<S> + 'static),+> FromRequest<S> for ($($T,)+)
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where
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S: 'static,
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{
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type Config = ($($T::Config,)+);
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type Result = Box<Future<Item = ($($T,)+), Error = Error>>;
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|
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fn from_request(req: &HttpRequest<S>, cfg: &Self::Config) -> Self::Result {
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Box::new($fut_type {
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s: PhantomData,
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items: <($(Option<$T>,)+)>::default(),
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futs: ($(Some($T::from_request(req, &cfg.$n).into()),)+),
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})
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}
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}
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|
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struct $fut_type<S, $($T: FromRequest<S>),+>
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where
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S: 'static,
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{
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|
s: PhantomData<S>,
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|
items: ($(Option<$T>,)+),
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futs: ($(Option<AsyncResult<$T>>,)+),
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}
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|
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impl<S, $($T: FromRequest<S>),+> Future for $fut_type<S, $($T),+>
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|
where
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|
S: 'static,
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|
{
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type Item = ($($T,)+);
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type Error = Error;
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|
|
fn poll(&mut self) -> Poll<Self::Item, Self::Error> {
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let mut ready = true;
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|
|
$(
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if self.futs.$n.is_some() {
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match self.futs.$n.as_mut().unwrap().poll() {
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|
Ok(Async::Ready(item)) => {
|
|
self.items.$n = Some(item);
|
|
self.futs.$n.take();
|
|
}
|
|
Ok(Async::NotReady) => ready = false,
|
|
Err(e) => return Err(e),
|
|
}
|
|
}
|
|
)+
|
|
|
|
if ready {
|
|
Ok(Async::Ready(
|
|
($(self.items.$n.take().unwrap(),)+)
|
|
))
|
|
} else {
|
|
Ok(Async::NotReady)
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
tuple_from_req!(TupleFromRequest1, (0, A));
|
|
tuple_from_req!(TupleFromRequest2, (0, A), (1, B));
|
|
tuple_from_req!(TupleFromRequest3, (0, A), (1, B), (2, C));
|
|
tuple_from_req!(TupleFromRequest4, (0, A), (1, B), (2, C), (3, D));
|
|
tuple_from_req!(TupleFromRequest5, (0, A), (1, B), (2, C), (3, D), (4, E));
|
|
tuple_from_req!(
|
|
TupleFromRequest6,
|
|
(0, A),
|
|
(1, B),
|
|
(2, C),
|
|
(3, D),
|
|
(4, E),
|
|
(5, F)
|
|
);
|
|
tuple_from_req!(
|
|
TupleFromRequest7,
|
|
(0, A),
|
|
(1, B),
|
|
(2, C),
|
|
(3, D),
|
|
(4, E),
|
|
(5, F),
|
|
(6, G)
|
|
);
|
|
tuple_from_req!(
|
|
TupleFromRequest8,
|
|
(0, A),
|
|
(1, B),
|
|
(2, C),
|
|
(3, D),
|
|
(4, E),
|
|
(5, F),
|
|
(6, G),
|
|
(7, H)
|
|
);
|
|
tuple_from_req!(
|
|
TupleFromRequest9,
|
|
(0, A),
|
|
(1, B),
|
|
(2, C),
|
|
(3, D),
|
|
(4, E),
|
|
(5, F),
|
|
(6, G),
|
|
(7, H),
|
|
(8, I)
|
|
);
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
use bytes::Bytes;
|
|
use futures::{Async, Future};
|
|
use http::header;
|
|
use mime;
|
|
use resource::Resource;
|
|
use router::{ResourceDef, Router};
|
|
use test::TestRequest;
|
|
|
|
#[derive(Deserialize, Debug, PartialEq)]
|
|
struct Info {
|
|
hello: String,
|
|
}
|
|
|
|
#[test]
|
|
fn test_bytes() {
|
|
let cfg = PayloadConfig::default();
|
|
let req = TestRequest::with_header(header::CONTENT_LENGTH, "11")
|
|
.set_payload(Bytes::from_static(b"hello=world"))
|
|
.finish();
|
|
|
|
match Bytes::from_request(&req, &cfg).unwrap().poll().unwrap() {
|
|
Async::Ready(s) => {
|
|
assert_eq!(s, Bytes::from_static(b"hello=world"));
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_string() {
|
|
let cfg = PayloadConfig::default();
|
|
let req = TestRequest::with_header(header::CONTENT_LENGTH, "11")
|
|
.set_payload(Bytes::from_static(b"hello=world"))
|
|
.finish();
|
|
|
|
match String::from_request(&req, &cfg).unwrap().poll().unwrap() {
|
|
Async::Ready(s) => {
|
|
assert_eq!(s, "hello=world");
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_form() {
|
|
let req = TestRequest::with_header(
|
|
header::CONTENT_TYPE,
|
|
"application/x-www-form-urlencoded",
|
|
).header(header::CONTENT_LENGTH, "11")
|
|
.set_payload(Bytes::from_static(b"hello=world"))
|
|
.finish();
|
|
|
|
let mut cfg = FormConfig::default();
|
|
cfg.limit(4096);
|
|
match Form::<Info>::from_request(&req, &cfg).poll().unwrap() {
|
|
Async::Ready(s) => {
|
|
assert_eq!(s.hello, "world");
|
|
}
|
|
_ => unreachable!(),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_payload_config() {
|
|
let req = TestRequest::default().finish();
|
|
let mut cfg = PayloadConfig::default();
|
|
cfg.mimetype(mime::APPLICATION_JSON);
|
|
assert!(cfg.check_mimetype(&req).is_err());
|
|
|
|
let req = TestRequest::with_header(
|
|
header::CONTENT_TYPE,
|
|
"application/x-www-form-urlencoded",
|
|
).finish();
|
|
assert!(cfg.check_mimetype(&req).is_err());
|
|
|
|
let req =
|
|
TestRequest::with_header(header::CONTENT_TYPE, "application/json").finish();
|
|
assert!(cfg.check_mimetype(&req).is_ok());
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
struct MyStruct {
|
|
key: String,
|
|
value: String,
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
struct Id {
|
|
id: String,
|
|
}
|
|
|
|
#[derive(Deserialize)]
|
|
struct Test2 {
|
|
key: String,
|
|
value: u32,
|
|
}
|
|
|
|
#[test]
|
|
fn test_request_extract() {
|
|
let req = TestRequest::with_uri("/name/user1/?id=test").finish();
|
|
|
|
let mut router = Router::<()>::new();
|
|
router.register_resource(Resource::new(ResourceDef::new("/{key}/{value}/")));
|
|
let info = router.recognize(&req, &(), 0);
|
|
let req = req.with_route_info(info);
|
|
|
|
let s = Path::<MyStruct>::from_request(&req, &()).unwrap();
|
|
assert_eq!(s.key, "name");
|
|
assert_eq!(s.value, "user1");
|
|
|
|
let s = Path::<(String, String)>::from_request(&req, &()).unwrap();
|
|
assert_eq!(s.0, "name");
|
|
assert_eq!(s.1, "user1");
|
|
|
|
let s = Query::<Id>::from_request(&req, &()).unwrap();
|
|
assert_eq!(s.id, "test");
|
|
|
|
let mut router = Router::<()>::new();
|
|
router.register_resource(Resource::new(ResourceDef::new("/{key}/{value}/")));
|
|
let req = TestRequest::with_uri("/name/32/").finish();
|
|
let info = router.recognize(&req, &(), 0);
|
|
let req = req.with_route_info(info);
|
|
|
|
let s = Path::<Test2>::from_request(&req, &()).unwrap();
|
|
assert_eq!(s.as_ref().key, "name");
|
|
assert_eq!(s.value, 32);
|
|
|
|
let s = Path::<(String, u8)>::from_request(&req, &()).unwrap();
|
|
assert_eq!(s.0, "name");
|
|
assert_eq!(s.1, 32);
|
|
|
|
let res = Path::<Vec<String>>::extract(&req).unwrap();
|
|
assert_eq!(res[0], "name".to_owned());
|
|
assert_eq!(res[1], "32".to_owned());
|
|
}
|
|
|
|
#[test]
|
|
fn test_extract_path_single() {
|
|
let mut router = Router::<()>::new();
|
|
router.register_resource(Resource::new(ResourceDef::new("/{value}/")));
|
|
|
|
let req = TestRequest::with_uri("/32/").finish();
|
|
let info = router.recognize(&req, &(), 0);
|
|
let req = req.with_route_info(info);
|
|
assert_eq!(*Path::<i8>::from_request(&req, &()).unwrap(), 32);
|
|
}
|
|
|
|
#[test]
|
|
fn test_tuple_extract() {
|
|
let mut router = Router::<()>::new();
|
|
router.register_resource(Resource::new(ResourceDef::new("/{key}/{value}/")));
|
|
|
|
let req = TestRequest::with_uri("/name/user1/?id=test").finish();
|
|
let info = router.recognize(&req, &(), 0);
|
|
let req = req.with_route_info(info);
|
|
|
|
let res = match <(Path<(String, String)>,)>::extract(&req).poll() {
|
|
Ok(Async::Ready(res)) => res,
|
|
_ => panic!("error"),
|
|
};
|
|
assert_eq!((res.0).0, "name");
|
|
assert_eq!((res.0).1, "user1");
|
|
|
|
let res = match <(Path<(String, String)>, Path<(String, String)>)>::extract(&req)
|
|
.poll()
|
|
{
|
|
Ok(Async::Ready(res)) => res,
|
|
_ => panic!("error"),
|
|
};
|
|
assert_eq!((res.0).0, "name");
|
|
assert_eq!((res.0).1, "user1");
|
|
assert_eq!((res.1).0, "name");
|
|
assert_eq!((res.1).1, "user1");
|
|
}
|
|
}
|