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use regex::Regex;
use crate::https::JavaScriptFile;
pub fn compression_content_type_checker() -> Regex {
Regex::new(r"^(?:(image/svg\+xml)|(?:application|text)/(?:css|javascript|json|text|x-javascript|xml|wasm))(|; charset=utf-8)$")
.expect("regex matcher for tide_compress content-type check failed to compile")
}
#[derive(Default)]
pub struct CacheableMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for CacheableMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
response.insert_header("Cache-Control", "max-age=300,must-revalidate,private");
Ok(response)
}
}
#[derive(Default)]
pub struct NoCacheMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for NoCacheMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
response.insert_header("Cache-Control", "no-store, max-age=0");
response.insert_header("Pragma", "no-cache");
Ok(response)
}
}
#[derive(Default)]
pub struct StaticContentMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for StaticContentMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
response.insert_header("Cache-Control", "max-age=3600,private");
Ok(response)
}
}
#[derive(Default)]
pub struct StrictResponseMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for StrictResponseMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
response.insert_header("cross-origin-embedder-policy", "require-corp");
response.insert_header("cross-origin-opener-policy", "same-origin");
response.insert_header("cross-origin-resource-policy", "same-origin");
response.insert_header("x-content-type-options", "nosniff");
Ok(response)
}
}
#[derive(Default)]
struct StrictRequestMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for StrictRequestMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let proceed = request
.header("sec-fetch-site")
.map(|hv| {
matches!(hv.as_str(), "same-origin" | "same-site" | "none")
|| (request.header("sec-fetch-mode").map(|v| v.as_str()) == Some("navigate")
&& request.method() == tide::http::Method::Get
&& request.header("sec-fetch-dest").map(|v| v.as_str()) != Some("object")
&& request.header("sec-fetch-dest").map(|v| v.as_str()) != Some("embed"))
})
.unwrap_or(true);
if proceed {
Ok(next.run(request).await)
} else {
Err(tide::Error::from_str(
tide::StatusCode::MethodNotAllowed,
"StrictRequestViolation",
))
}
}
}
#[derive(Default)]
pub struct UIContentSecurityPolicyResponseMiddleware {
pub hashes: Vec<JavaScriptFile>,
}
impl UIContentSecurityPolicyResponseMiddleware {
pub fn new(hashes: Vec<JavaScriptFile>) -> Self {
Self { hashes }
}
}
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State>
for UIContentSecurityPolicyResponseMiddleware
{
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
let hashes: Vec<String> = self
.hashes
.iter()
.map(|j| format!("'{}'", j.hash))
.collect();
response.insert_header(
"content-security-policy",
vec![
"default-src 'self'",
format!("script-src 'self' {} 'unsafe-eval'", hashes.join(" ")).as_str(),
"form-action https: 'self'", "worker-src 'none'",
"base-uri 'self'",
"frame-ancestors 'none'",
]
.join(";"),
);
Ok(response)
}
}
const KANIDM_VERSION: &str = env!("CARGO_PKG_VERSION");
#[derive(Default)]
pub struct VersionHeaderMiddleware;
#[async_trait::async_trait]
impl<State: Clone + Send + Sync + 'static> tide::Middleware<State> for VersionHeaderMiddleware {
async fn handle(
&self,
request: tide::Request<State>,
next: tide::Next<'_, State>,
) -> tide::Result {
let mut response = next.run(request).await;
response.insert_header("X-KANIDM-VERSION", KANIDM_VERSION);
Ok(response)
}
}