mirror of
https://github.com/actix/actix-web.git
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553 lines
18 KiB
Rust
553 lines
18 KiB
Rust
//! Various helpers
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use http::{header, StatusCode};
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use regex::Regex;
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use handler::Handler;
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use httprequest::HttpRequest;
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use httpresponse::HttpResponse;
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/// Path normalization helper
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///
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/// By normalizing it means:
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///
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/// - Add a trailing slash to the path.
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/// - Remove a trailing slash from the path.
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/// - Double slashes are replaced by one.
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///
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/// The handler returns as soon as it finds a path that resolves
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/// correctly. The order if all enable is 1) merge, 3) both merge and append
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/// and 3) append. If the path resolves with
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/// at least one of those conditions, it will redirect to the new path.
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///
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/// If *append* is *true* append slash when needed. If a resource is
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/// defined with trailing slash and the request comes without it, it will
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/// append it automatically.
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///
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/// If *merge* is *true*, merge multiple consecutive slashes in the path into
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/// one.
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///
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/// This handler designed to be use as a handler for application's *default
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/// resource*.
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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::*;
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/// use actix_web::http::NormalizePath;
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///
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/// # fn index(req: HttpRequest) -> HttpResponse {
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/// # HttpResponse::Ok().into()
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/// # }
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/// fn main() {
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/// let app = App::new()
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/// .resource("/test/", |r| r.f(index))
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/// .default_resource(|r| r.h(NormalizePath::default()))
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/// .finish();
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/// }
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/// ```
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/// In this example `/test`, `/test///` will be redirected to `/test/` url.
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pub struct NormalizePath {
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append: bool,
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merge: bool,
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re_merge: Regex,
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redirect: StatusCode,
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not_found: StatusCode,
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}
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impl Default for NormalizePath {
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/// Create default `NormalizePath` instance, *append* is set to *true*,
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/// *merge* is set to *true* and *redirect* is set to
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/// `StatusCode::MOVED_PERMANENTLY`
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fn default() -> NormalizePath {
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NormalizePath {
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append: true,
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merge: true,
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re_merge: Regex::new("//+").unwrap(),
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redirect: StatusCode::MOVED_PERMANENTLY,
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not_found: StatusCode::NOT_FOUND,
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}
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}
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}
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impl NormalizePath {
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/// Create new `NormalizePath` instance
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pub fn new(append: bool, merge: bool, redirect: StatusCode) -> NormalizePath {
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NormalizePath {
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append,
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merge,
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redirect,
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re_merge: Regex::new("//+").unwrap(),
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not_found: StatusCode::NOT_FOUND,
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}
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}
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}
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impl<S> Handler<S> for NormalizePath {
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type Result = HttpResponse;
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fn handle(&mut self, req: HttpRequest<S>) -> Self::Result {
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if let Some(router) = req.router() {
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let query = req.query_string();
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if self.merge {
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// merge slashes
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let p = self.re_merge.replace_all(req.path(), "/");
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if p.len() != req.path().len() {
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if router.has_route(p.as_ref()) {
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let p = if !query.is_empty() {
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p + "?" + query
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} else {
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p
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};
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_ref())
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.finish();
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}
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// merge slashes and append trailing slash
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if self.append && !p.ends_with('/') {
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let p = p.as_ref().to_owned() + "/";
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if router.has_route(&p) {
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let p = if !query.is_empty() {
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p + "?" + query
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} else {
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p
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};
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_str())
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.finish();
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}
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}
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// try to remove trailing slash
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if p.ends_with('/') {
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let p = p.as_ref().trim_right_matches('/');
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if router.has_route(p) {
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let mut req = HttpResponse::build(self.redirect);
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return if !query.is_empty() {
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req.header(
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header::LOCATION,
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(p.to_owned() + "?" + query).as_str(),
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)
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} else {
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req.header(header::LOCATION, p)
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}.finish();
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}
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}
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} else if p.ends_with('/') {
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// try to remove trailing slash
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let p = p.as_ref().trim_right_matches('/');
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if router.has_route(p) {
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let mut req = HttpResponse::build(self.redirect);
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return if !query.is_empty() {
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req.header(
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header::LOCATION,
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(p.to_owned() + "?" + query).as_str(),
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)
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} else {
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req.header(header::LOCATION, p)
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}.finish();
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}
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}
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}
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// append trailing slash
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if self.append && !req.path().ends_with('/') {
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let p = req.path().to_owned() + "/";
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if router.has_route(&p) {
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let p = if !query.is_empty() {
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p + "?" + query
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} else {
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p
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};
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return HttpResponse::build(self.redirect)
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.header(header::LOCATION, p.as_str())
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.finish();
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}
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}
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}
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HttpResponse::new(self.not_found)
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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 application::App;
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use http::{header, Method};
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use test::TestRequest;
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fn index(_req: HttpRequest) -> HttpResponse {
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HttpResponse::new(StatusCode::OK)
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}
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#[test]
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fn test_normalize_path_trailing_slashes() {
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let mut app = App::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource2/", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(NormalizePath::default()))
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.finish();
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// trailing slashes
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let params = vec![
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("/resource1", "", StatusCode::OK),
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(
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"/resource1/",
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"/resource1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/resource2",
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"/resource2/",
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StatusCode::MOVED_PERMANENTLY,
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),
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("/resource2/", "", StatusCode::OK),
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("/resource1?p1=1&p2=2", "", StatusCode::OK),
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(
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"/resource1/?p1=1&p2=2",
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"/resource1?p1=1&p2=2",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/resource2?p1=1&p2=2",
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"/resource2/?p1=1&p2=2",
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StatusCode::MOVED_PERMANENTLY,
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),
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("/resource2/?p1=1&p2=2", "", StatusCode::OK),
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];
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for (path, target, code) in params {
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let req = app.prepare_request(TestRequest::with_uri(path).finish());
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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if !target.is_empty() {
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assert_eq!(
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target,
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r.headers()
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.get(header::LOCATION)
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.unwrap()
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.to_str()
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.unwrap()
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);
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}
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}
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}
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#[test]
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fn test_normalize_path_trailing_slashes_disabled() {
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let mut app = App::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource2/", |r| r.method(Method::GET).f(index))
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.default_resource(|r| {
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r.h(NormalizePath::new(
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false,
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true,
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StatusCode::MOVED_PERMANENTLY,
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))
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})
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.finish();
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// trailing slashes
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let params = vec![
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("/resource1", StatusCode::OK),
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("/resource1/", StatusCode::MOVED_PERMANENTLY),
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("/resource2", StatusCode::NOT_FOUND),
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("/resource2/", StatusCode::OK),
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("/resource1?p1=1&p2=2", StatusCode::OK),
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("/resource1/?p1=1&p2=2", StatusCode::MOVED_PERMANENTLY),
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("/resource2?p1=1&p2=2", StatusCode::NOT_FOUND),
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("/resource2/?p1=1&p2=2", StatusCode::OK),
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];
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for (path, code) in params {
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let req = app.prepare_request(TestRequest::with_uri(path).finish());
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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}
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}
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#[test]
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fn test_normalize_path_merge_slashes() {
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let mut app = App::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource1/a/b", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(NormalizePath::default()))
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.finish();
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// trailing slashes
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let params = vec![
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("/resource1/a/b", "", StatusCode::OK),
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(
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"/resource1/",
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"/resource1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/resource1//",
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"/resource1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource1//a//b",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource1//a//b/",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource1//a//b//",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"///resource1//a//b",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a///b",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a//b/",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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("/resource1/a/b?p=1", "", StatusCode::OK),
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(
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"//resource1//a//b?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource1//a//b/?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"///resource1//a//b?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a///b?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a//b/?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a//b//?p=1",
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"/resource1/a/b?p=1",
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StatusCode::MOVED_PERMANENTLY,
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),
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];
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for (path, target, code) in params {
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let req = app.prepare_request(TestRequest::with_uri(path).finish());
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let resp = app.run(req);
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let r = resp.as_response().unwrap();
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assert_eq!(r.status(), code);
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if !target.is_empty() {
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assert_eq!(
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target,
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r.headers()
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.get(header::LOCATION)
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.unwrap()
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.to_str()
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.unwrap()
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);
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}
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}
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}
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#[test]
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fn test_normalize_path_merge_and_append_slashes() {
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let mut app = App::new()
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.resource("/resource1", |r| r.method(Method::GET).f(index))
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.resource("/resource2/", |r| r.method(Method::GET).f(index))
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.resource("/resource1/a/b", |r| r.method(Method::GET).f(index))
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.resource("/resource2/a/b/", |r| r.method(Method::GET).f(index))
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.default_resource(|r| r.h(NormalizePath::default()))
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.finish();
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// trailing slashes
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let params = vec![
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("/resource1/a/b", "", StatusCode::OK),
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(
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"/resource1/a/b/",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource2//a//b",
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"/resource2/a/b/",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource2//a//b/",
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"/resource2/a/b/",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"//resource2//a//b//",
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"/resource2/a/b/",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"///resource1//a//b",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"///resource1//a//b/",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a///b",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/////resource1/a///b/",
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"/resource1/a/b",
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StatusCode::MOVED_PERMANENTLY,
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),
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(
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"/resource2/a/b",
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"/resource2/a/b/",
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StatusCode::MOVED_PERMANENTLY,
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),
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("/resource2/a/b/", "", StatusCode::OK),
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(
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"//resource2//a//b",
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"/resource2/a/b/",
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StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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"//resource2//a//b/",
|
|
"/resource2/a/b/",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"///resource2//a//b",
|
|
"/resource2/a/b/",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"///resource2//a//b/",
|
|
"/resource2/a/b/",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"/////resource2/a///b",
|
|
"/resource2/a/b/",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"/////resource2/a///b/",
|
|
"/resource2/a/b/",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
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|
("/resource1/a/b?p=1", "", StatusCode::OK),
|
|
(
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"/resource1/a/b/?p=1",
|
|
"/resource1/a/b?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"//resource2//a//b?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
|
"//resource2//a//b/?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
|
"///resource1//a//b?p=1",
|
|
"/resource1/a/b?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
|
"///resource1//a//b/?p=1",
|
|
"/resource1/a/b?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
|
"/////resource1/a///b?p=1",
|
|
"/resource1/a/b?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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|
"/////resource1/a///b/?p=1",
|
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"/resource1/a/b?p=1",
|
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StatusCode::MOVED_PERMANENTLY,
|
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),
|
|
(
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"/////resource1/a///b//?p=1",
|
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"/resource1/a/b?p=1",
|
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StatusCode::MOVED_PERMANENTLY,
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),
|
|
(
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"/resource2/a/b?p=1",
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"/resource2/a/b/?p=1",
|
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StatusCode::MOVED_PERMANENTLY,
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),
|
|
(
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"//resource2//a//b?p=1",
|
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"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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"//resource2//a//b/?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
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"///resource2//a//b?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
|
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"///resource2//a//b/?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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"/////resource2/a///b?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
(
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"/////resource2/a///b/?p=1",
|
|
"/resource2/a/b/?p=1",
|
|
StatusCode::MOVED_PERMANENTLY,
|
|
),
|
|
];
|
|
for (path, target, code) in params {
|
|
let req = app.prepare_request(TestRequest::with_uri(path).finish());
|
|
let resp = app.run(req);
|
|
let r = resp.as_response().unwrap();
|
|
assert_eq!(r.status(), code);
|
|
if !target.is_empty() {
|
|
assert_eq!(
|
|
target,
|
|
r.headers()
|
|
.get(header::LOCATION)
|
|
.unwrap()
|
|
.to_str()
|
|
.unwrap()
|
|
);
|
|
}
|
|
}
|
|
}
|
|
}
|