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actix-web/src/httprequest.rs

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//! HTTP Request message related code.
use std::{io, cmp, str, fmt, mem};
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use std::rc::Rc;
use std::net::SocketAddr;
use bytes::Bytes;
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use cookie::Cookie;
use futures::{Async, Stream, Poll};
use failure;
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use url::{Url, form_urlencoded};
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use http::{header, Uri, Method, Version, HeaderMap, Extensions};
use tokio_io::AsyncRead;
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use info::ConnectionInfo;
use param::Params;
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use router::Router;
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use payload::Payload;
use httpmessage::HttpMessage;
use helpers::SharedHttpInnerMessage;
use error::{UrlGenerationError, CookieParseError, PayloadError};
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pub struct HttpInnerMessage {
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pub version: Version,
pub method: Method,
pub uri: Uri,
pub headers: HeaderMap,
pub extensions: Extensions,
pub params: Params<'static>,
pub cookies: Option<Vec<Cookie<'static>>>,
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pub query: Params<'static>,
pub query_loaded: bool,
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pub addr: Option<SocketAddr>,
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pub payload: Option<Payload>,
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pub info: Option<ConnectionInfo<'static>>,
}
impl Default for HttpInnerMessage {
fn default() -> HttpInnerMessage {
HttpInnerMessage {
method: Method::GET,
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uri: Uri::default(),
version: Version::HTTP_11,
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headers: HeaderMap::with_capacity(16),
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params: Params::new(),
query: Params::new(),
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query_loaded: false,
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cookies: None,
addr: None,
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payload: None,
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extensions: Extensions::new(),
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info: None,
}
}
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}
impl HttpInnerMessage {
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/// Checks if a connection should be kept alive.
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#[inline]
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pub fn keep_alive(&self) -> bool {
if let Some(conn) = self.headers.get(header::CONNECTION) {
if let Ok(conn) = conn.to_str() {
if self.version == Version::HTTP_10 && conn.contains("keep-alive") {
true
} else {
self.version == Version::HTTP_11 &&
!(conn.contains("close") || conn.contains("upgrade"))
}
} else {
false
}
} else {
self.version != Version::HTTP_10
}
}
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#[inline]
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pub(crate) fn reset(&mut self) {
self.headers.clear();
self.extensions.clear();
self.params.clear();
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self.query.clear();
self.query_loaded = false;
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self.cookies = None;
self.addr = None;
self.info = None;
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self.payload = None;
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}
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}
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/// An HTTP Request
pub struct HttpRequest<S=()>(SharedHttpInnerMessage, Option<Rc<S>>, Option<Router>);
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impl HttpRequest<()> {
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/// Construct a new Request.
#[inline]
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pub fn new(method: Method, uri: Uri,
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version: Version, headers: HeaderMap, payload: Option<Payload>) -> HttpRequest
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{
HttpRequest(
SharedHttpInnerMessage::from_message(HttpInnerMessage {
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method,
uri,
version,
headers,
payload,
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params: Params::new(),
query: Params::new(),
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query_loaded: false,
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cookies: None,
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addr: None,
extensions: Extensions::new(),
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info: None,
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}),
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None,
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None,
)
}
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#[inline(always)]
#[cfg_attr(feature = "cargo-clippy", allow(inline_always))]
pub(crate) fn from_message(msg: SharedHttpInnerMessage) -> HttpRequest {
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HttpRequest(msg, None, None)
}
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#[inline]
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/// Construct new http request with state.
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pub fn with_state<S>(self, state: Rc<S>, router: Router) -> HttpRequest<S> {
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HttpRequest(self.0, Some(state), Some(router))
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}
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#[cfg(test)]
/// Construct new http request with state.
pub(crate) fn with_state_no_router<S>(self, state: Rc<S>) -> HttpRequest<S> {
HttpRequest(self.0, Some(state), None)
}
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}
impl<S> HttpMessage for HttpRequest<S> {
#[inline]
fn headers(&self) -> &HeaderMap {
&self.as_ref().headers
}
}
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impl<S> HttpRequest<S> {
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#[inline]
/// Construct new http request with state.
pub fn change_state<NS>(&self, state: Rc<NS>) -> HttpRequest<NS> {
HttpRequest(self.0.clone(), Some(state), self.2.clone())
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}
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#[inline]
/// Construct new http request without state.
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pub(crate) fn without_state(&self) -> HttpRequest {
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HttpRequest(self.0.clone(), None, None)
}
/// get mutable reference for inner message
/// mutable reference should not be returned as result for request's method
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#[inline(always)]
#[cfg_attr(feature = "cargo-clippy", allow(mut_from_ref, inline_always))]
pub(crate) fn as_mut(&self) -> &mut HttpInnerMessage {
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self.0.get_mut()
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}
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#[inline(always)]
#[cfg_attr(feature = "cargo-clippy", allow(mut_from_ref, inline_always))]
fn as_ref(&self) -> &HttpInnerMessage {
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self.0.get_ref()
}
#[inline]
pub(crate) fn get_inner(&mut self) -> &mut HttpInnerMessage {
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self.as_mut()
}
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/// Shared application state
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#[inline]
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pub fn state(&self) -> &S {
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self.1.as_ref().unwrap()
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}
/// Protocol extensions.
#[inline]
pub fn extensions(&mut self) -> &mut Extensions {
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&mut self.as_mut().extensions
}
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#[doc(hidden)]
pub fn prefix_len(&self) -> usize {
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if let Some(router) = self.router() { router.prefix().len() } else { 0 }
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}
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/// Read the Request Uri.
#[inline]
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pub fn uri(&self) -> &Uri { &self.as_ref().uri }
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#[doc(hidden)]
#[inline]
/// Modify the Request Uri.
///
/// This might be useful for middlewares, i.e. path normalization
pub fn uri_mut(&mut self) -> &mut Uri {
&mut self.as_mut().uri
}
/// Read the Request method.
#[inline]
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pub fn method(&self) -> &Method { &self.as_ref().method }
/// Read the Request Version.
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#[inline]
pub fn version(&self) -> Version {
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self.as_ref().version
}
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#[doc(hidden)]
#[inline]
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pub fn headers_mut(&mut self) -> &mut HeaderMap {
&mut self.as_mut().headers
}
/// The target path of this Request.
#[inline]
pub fn path(&self) -> &str {
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self.uri().path()
}
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/// Get *ConnectionInfo* for correct request.
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pub fn connection_info(&self) -> &ConnectionInfo {
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if self.as_ref().info.is_none() {
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let info: ConnectionInfo<'static> = unsafe{
mem::transmute(ConnectionInfo::new(self))};
self.as_mut().info = Some(info);
}
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self.as_ref().info.as_ref().unwrap()
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}
/// Generate url for named resource
///
/// ```rust
/// # extern crate actix_web;
/// # use actix_web::*;
/// # use actix_web::httpcodes::*;
/// #
/// fn index(req: HttpRequest) -> HttpResponse {
/// let url = req.url_for("foo", &["1", "2", "3"]); // <- generate url for "foo" resource
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/// HttpOk.into()
/// }
///
/// fn main() {
/// let app = Application::new()
/// .resource("/test/{one}/{two}/{three}", |r| {
/// r.name("foo"); // <- set resource name, then it could be used in `url_for`
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/// r.method(Method::GET).f(|_| httpcodes::HttpOk);
/// })
/// .finish();
/// }
/// ```
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pub fn url_for<U, I>(&self, name: &str, elements: U) -> Result<Url, UrlGenerationError>
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where U: IntoIterator<Item=I>,
I: AsRef<str>,
{
if self.router().is_none() {
Err(UrlGenerationError::RouterNotAvailable)
} else {
let path = self.router().unwrap().resource_path(name, elements)?;
if path.starts_with('/') {
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let conn = self.connection_info();
Ok(Url::parse(&format!("{}://{}{}", conn.scheme(), conn.host(), path))?)
} else {
Ok(Url::parse(&path)?)
}
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}
}
/// This method returns reference to current `Router` object.
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#[inline]
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pub fn router(&self) -> Option<&Router> {
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self.2.as_ref()
}
/// Peer socket address
///
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/// Peer address is actual socket address, if proxy is used in front of
/// actix http server, then peer address would be address of this proxy.
///
/// To get client connection information `connection_info()` method should be used.
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#[inline]
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pub fn peer_addr(&self) -> Option<&SocketAddr> {
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self.as_ref().addr.as_ref()
}
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#[inline]
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pub(crate) fn set_peer_addr(&mut self, addr: Option<SocketAddr>) {
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self.as_mut().addr = addr
}
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/// Get a reference to the Params object.
/// Params is a container for url query parameters.
pub fn query(&self) -> &Params {
if !self.as_ref().query_loaded {
let params: &mut Params = unsafe{ mem::transmute(&mut self.as_mut().query) };
self.as_mut().query_loaded = true;
for (key, val) in form_urlencoded::parse(self.query_string().as_ref()) {
params.add(key, val);
}
}
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unsafe{ mem::transmute(&self.as_ref().query) }
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}
/// The query string in the URL.
///
/// E.g., id=10
#[inline]
pub fn query_string(&self) -> &str {
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if let Some(query) = self.uri().query().as_ref() {
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query
} else {
""
}
}
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/// Load request cookies.
pub fn cookies(&self) -> Result<&Vec<Cookie<'static>>, CookieParseError> {
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if self.as_ref().cookies.is_none() {
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let msg = self.as_mut();
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let mut cookies = Vec::new();
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if let Some(val) = msg.headers.get(header::COOKIE) {
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let s = str::from_utf8(val.as_bytes())
.map_err(CookieParseError::from)?;
for cookie in s.split("; ") {
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cookies.push(Cookie::parse_encoded(cookie)?.into_owned());
}
}
msg.cookies = Some(cookies)
}
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Ok(self.as_ref().cookies.as_ref().unwrap())
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}
/// Return request cookie.
pub fn cookie(&self, name: &str) -> Option<&Cookie> {
if let Ok(cookies) = self.cookies() {
for cookie in cookies {
if cookie.name() == name {
return Some(cookie)
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}
}
}
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None
}
/// Get a reference to the Params object.
/// Params is a container for url parameters.
/// Route supports glob patterns: * for a single wildcard segment and :param
/// for matching storing that segment of the request url in the Params object.
#[inline]
pub fn match_info(&self) -> &Params {
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unsafe{ mem::transmute(&self.as_ref().params) }
}
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/// Get mutable reference to request's Params.
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#[inline]
pub fn match_info_mut(&mut self) -> &mut Params {
unsafe{ mem::transmute(&mut self.as_mut().params) }
}
/// Checks if a connection should be kept alive.
pub fn keep_alive(&self) -> bool {
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self.as_ref().keep_alive()
}
/// Check if request requires connection upgrade
pub(crate) fn upgrade(&self) -> bool {
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if let Some(conn) = self.as_ref().headers.get(header::CONNECTION) {
if let Ok(s) = conn.to_str() {
return s.to_lowercase().contains("upgrade")
}
}
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self.as_ref().method == Method::CONNECT
}
#[cfg(test)]
pub(crate) fn payload(&self) -> &Payload {
let msg = self.as_mut();
if msg.payload.is_none() {
msg.payload = Some(Payload::empty());
}
msg.payload.as_ref().unwrap()
}
#[cfg(test)]
pub(crate) fn payload_mut(&mut self) -> &mut Payload {
let msg = self.as_mut();
if msg.payload.is_none() {
msg.payload = Some(Payload::empty());
}
msg.payload.as_mut().unwrap()
}
}
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impl Default for HttpRequest<()> {
/// Construct default request
fn default() -> HttpRequest {
HttpRequest(SharedHttpInnerMessage::default(), None, None)
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}
}
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impl<S> Clone for HttpRequest<S> {
fn clone(&self) -> HttpRequest<S> {
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HttpRequest(self.0.clone(), self.1.clone(), self.2.clone())
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}
}
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impl<S> Stream for HttpRequest<S> {
type Item = Bytes;
type Error = PayloadError;
fn poll(&mut self) -> Poll<Option<Bytes>, PayloadError> {
let msg = self.as_mut();
if msg.payload.is_none() {
Ok(Async::Ready(None))
} else {
msg.payload.as_mut().unwrap().poll()
}
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}
}
impl<S> io::Read for HttpRequest<S> {
fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
if self.as_mut().payload.is_some() {
match self.as_mut().payload.as_mut().unwrap().poll() {
Ok(Async::Ready(Some(mut b))) => {
let i = cmp::min(b.len(), buf.len());
buf.copy_from_slice(&b.split_to(i)[..i]);
if !b.is_empty() {
self.as_mut().payload.as_mut().unwrap().unread_data(b);
}
if i < buf.len() {
match self.read(&mut buf[i..]) {
Ok(n) => Ok(i + n),
Err(ref e) if e.kind() == io::ErrorKind::WouldBlock => Ok(i),
Err(e) => Err(e),
}
} else {
Ok(i)
}
}
Ok(Async::Ready(None)) => Ok(0),
Ok(Async::NotReady) =>
Err(io::Error::new(io::ErrorKind::WouldBlock, "Not ready")),
Err(e) =>
Err(io::Error::new(io::ErrorKind::Other, failure::Error::from(e).compat())),
}
} else {
Ok(0)
}
}
}
impl<S> AsyncRead for HttpRequest<S> {}
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impl<S> fmt::Debug for HttpRequest<S> {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let res = write!(f, "\nHttpRequest {:?} {}:{}\n",
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self.as_ref().version, self.as_ref().method, self.as_ref().uri);
if !self.query_string().is_empty() {
let _ = write!(f, " query: ?{:?}\n", self.query_string());
}
if !self.match_info().is_empty() {
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let _ = write!(f, " params: {:?}\n", self.as_ref().params);
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}
let _ = write!(f, " headers:\n");
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for key in self.as_ref().headers.keys() {
let vals: Vec<_> = self.as_ref().headers.get_all(key).iter().collect();
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if vals.len() > 1 {
let _ = write!(f, " {:?}: {:?}\n", key, vals);
} else {
let _ = write!(f, " {:?}: {:?}\n", key, vals[0]);
}
}
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res
}
}
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#[cfg(test)]
mod tests {
use super::*;
use http::{Uri, HttpTryFrom};
use router::Pattern;
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use resource::Resource;
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use test::TestRequest;
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use server::ServerSettings;
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#[test]
fn test_debug() {
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let req = TestRequest::with_header("content-type", "text/plain").finish();
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let dbg = format!("{:?}", req);
assert!(dbg.contains("HttpRequest"));
}
#[test]
fn test_uri_mut() {
let mut req = HttpRequest::default();
assert_eq!(req.path(), "/");
*req.uri_mut() = Uri::try_from("/test").unwrap();
assert_eq!(req.path(), "/test");
}
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#[test]
fn test_no_request_cookies() {
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let req = HttpRequest::default();
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assert!(req.cookies().unwrap().is_empty());
}
#[test]
fn test_request_cookies() {
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let req = TestRequest::with_header(
header::COOKIE, "cookie1=value1; cookie2=value2").finish();
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{
let cookies = req.cookies().unwrap();
assert_eq!(cookies.len(), 2);
assert_eq!(cookies[0].name(), "cookie1");
assert_eq!(cookies[0].value(), "value1");
assert_eq!(cookies[1].name(), "cookie2");
assert_eq!(cookies[1].value(), "value2");
}
let cookie = req.cookie("cookie1");
assert!(cookie.is_some());
let cookie = cookie.unwrap();
assert_eq!(cookie.name(), "cookie1");
assert_eq!(cookie.value(), "value1");
let cookie = req.cookie("cookie-unknown");
assert!(cookie.is_none());
}
#[test]
fn test_request_query() {
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let req = TestRequest::with_uri("/?id=test").finish();
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assert_eq!(req.query_string(), "id=test");
let query = req.query();
assert_eq!(&query["id"], "test");
}
#[test]
fn test_request_match_info() {
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let mut req = TestRequest::with_uri("/value/?id=test").finish();
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let mut resource = Resource::<()>::default();
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resource.name("index");
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let mut routes = Vec::new();
routes.push((Pattern::new("index", "/{key}/"), Some(resource)));
let (router, _) = Router::new("", ServerSettings::default(), routes);
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assert!(router.recognize(&mut req).is_some());
assert_eq!(req.match_info().get("key"), Some("value"));
}
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#[test]
fn test_url_for() {
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let req = TestRequest::with_header(header::HOST, "www.rust-lang.org")
.finish_no_router();
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let mut resource = Resource::<()>::default();
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resource.name("index");
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let routes = vec!((Pattern::new("index", "/user/{name}.{ext}"), Some(resource)));
let (router, _) = Router::new("/", ServerSettings::default(), routes);
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assert!(router.has_route("/user/test.html"));
assert!(!router.has_route("/test/unknown"));
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assert_eq!(req.url_for("unknown", &["test"]),
Err(UrlGenerationError::RouterNotAvailable));
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let req = req.with_state(Rc::new(()), router);
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assert_eq!(req.url_for("unknown", &["test"]),
Err(UrlGenerationError::ResourceNotFound));
assert_eq!(req.url_for("index", &["test"]),
Err(UrlGenerationError::NotEnoughElements));
let url = req.url_for("index", &["test", "html"]);
assert_eq!(url.ok().unwrap().as_str(), "http://www.rust-lang.org/user/test.html");
}
#[test]
fn test_url_for_with_prefix() {
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let req = TestRequest::with_header(header::HOST, "www.rust-lang.org").finish();
let mut resource = Resource::<()>::default();
resource.name("index");
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let routes = vec![(Pattern::new("index", "/user/{name}.{ext}"), Some(resource))];
let (router, _) = Router::new("/prefix/", ServerSettings::default(), routes);
assert!(router.has_route("/user/test.html"));
assert!(!router.has_route("/prefix/user/test.html"));
let req = req.with_state(Rc::new(()), router);
let url = req.url_for("index", &["test", "html"]);
assert_eq!(url.ok().unwrap().as_str(), "http://www.rust-lang.org/prefix/user/test.html");
}
#[test]
fn test_url_for_external() {
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let req = HttpRequest::default();
let mut resource = Resource::<()>::default();
resource.name("index");
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let routes = vec![
(Pattern::new("youtube", "https://youtube.com/watch/{video_id}"), None)];
let (router, _) = Router::new::<()>("", ServerSettings::default(), routes);
assert!(!router.has_route("https://youtube.com/watch/unknown"));
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let req = req.with_state(Rc::new(()), router);
let url = req.url_for("youtube", &["oHg5SJYRHA0"]);
assert_eq!(url.ok().unwrap().as_str(), "https://youtube.com/watch/oHg5SJYRHA0");
}
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}