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