156 lines
4.1 KiB
Rust
156 lines
4.1 KiB
Rust
use std::sync::Arc;
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use std::net::SocketAddr;
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use futures::future::Future;
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use hyper::server::conn::AddrStream;
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use hyper::{Body,Request,Response,Server,Uri};
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use hyper::header::HOST;
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use hyper::service::{make_service_fn, service_fn};
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use garage_util::error::Error;
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use garage_model::garage::Garage;
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pub async fn run_web_server(
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garage: Arc<Garage>,
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shutdown_signal: impl Future<Output = ()>,
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) -> Result<(), Error> {
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let addr = &garage.config.s3_web.bind_addr;
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let service = make_service_fn(|conn: &AddrStream| {
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let garage = garage.clone();
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let client_addr = conn.remote_addr();
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info!("{:?}", client_addr);
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async move {
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Ok::<_, Error>(service_fn(move |req: Request<Body>| {
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let garage = garage.clone();
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handler(garage, req, client_addr)
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}))
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}
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});
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let server = Server::bind(&addr).serve(service);
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let graceful = server.with_graceful_shutdown(shutdown_signal);
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info!("Web server listening on http://{}", addr);
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graceful.await?;
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Ok(())
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}
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async fn handler(
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garage: Arc<Garage>,
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req: Request<Body>,
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addr: SocketAddr,
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) -> Result<Response<Body>, Error> {
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// Get http authority string (eg. [::1]:3902 or garage.tld:80)
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let authority = req
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.headers()
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.get(HOST)
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.ok_or(Error::BadRequest(format!("HOST header required")))?
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.to_str()?;
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// Get bucket
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let host = authority_to_host(authority)?;
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let root = &garage.config.s3_web.root_domain;
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let bucket = host_to_bucket(&host, root);
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// Get path
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let path = req.uri().path().to_string();
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let key = percent_encoding::percent_decode_str(&path).decode_utf8()?;
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info!("host: {}, bucket: {}, key: {}", host, bucket, key);
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Ok(Response::new(Body::from("hello world\n")))
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}
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/// Extract host from the authority section given by the HTTP host header
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///
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/// The HTTP host contains both a host and a port.
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/// Extracting the port is more complex than just finding the colon (:) symbol.
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/// An example of a case where it does not work: [::1]:3902
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/// Instead, we use the Uri module provided by Hyper that correctl parses this "authority" section
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fn authority_to_host(authority: &str) -> Result<String, Error> {
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// Hyper can not directly parse authority section so we build a fake URL
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// that contains our authority section
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let mut uri_str: String = "fake://".to_owned();
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uri_str.push_str(authority);
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match uri_str.parse::<Uri>() {
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Ok(uri) => {
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let host = uri
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.host()
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.ok_or(Error::BadRequest(format!("Unable to extract host from authority")))?;
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Ok(String::from(host))
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}
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_ => Err(Error::BadRequest(format!("Unable to parse authority (host HTTP header)"))),
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}
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}
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fn host_to_bucket<'a>(host: &'a str, root: &str) -> &'a str {
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if root.len() >= host.len() || !host.ends_with(root) {
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return host;
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}
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let len_diff = host.len() - root.len();
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let missing_starting_dot = root.chars().next() != Some('.');
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let cursor = if missing_starting_dot { len_diff - 1 } else { len_diff };
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&host[..cursor]
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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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#[test]
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fn authority_to_host_with_port() -> Result<(), Error> {
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let domain = authority_to_host("[::1]:3902")?;
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assert_eq!(domain, "[::1]");
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let domain2 = authority_to_host("garage.tld:65200")?;
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assert_eq!(domain2, "garage.tld");
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let domain3 = authority_to_host("127.0.0.1:80")?;
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assert_eq!(domain3, "127.0.0.1");
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Ok(())
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}
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#[test]
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fn authority_to_host_without_port() -> Result<(), Error> {
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let domain = authority_to_host("[::1]")?;
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assert_eq!(domain, "[::1]");
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let domain2 = authority_to_host("garage.tld")?;
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assert_eq!(domain2, "garage.tld");
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let domain3 = authority_to_host("127.0.0.1")?;
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assert_eq!(domain3, "127.0.0.1");
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Ok(())
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}
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#[test]
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fn host_to_bucket_test() {
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assert_eq!(
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host_to_bucket("john.doe.garage.tld", ".garage.tld"),
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"john.doe");
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assert_eq!(
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host_to_bucket("john.doe.garage.tld", "garage.tld"),
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"john.doe");
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assert_eq!(
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host_to_bucket("john.doe.com", "garage.tld"),
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"john.doe.com");
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assert_eq!(
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host_to_bucket("john.doe.com", ".garage.tld"),
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"john.doe.com");
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assert_eq!(
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host_to_bucket("garage.tld", "garage.tld"),
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"garage.tld");
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assert_eq!(
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host_to_bucket("garage.tld", ".garage.tld"),
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"garage.tld");
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}
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}
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