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"${UID}" \ + "${USER}" + +WORKDIR /app + +RUN cargo new www-redirector +WORKDIR /app/www-redirector +COPY Cargo.toml Cargo.lock ./ +RUN cargo fetch --target x86_64-unknown-linux-musl --config net.git-fetch-with-cli=true +COPY src ./src +RUN cargo build --release --target x86_64-unknown-linux-musl --config net.git-fetch-with-cli=true +RUN strip target/x86_64-unknown-linux-musl/release/www-redirector + + +FROM scratch +COPY --from=builder /etc/passwd /etc/passwd +COPY --from=builder /etc/group /etc/group +WORKDIR /app +COPY --from=builder /app/www-redirector/target/x86_64-unknown-linux-musl/release/www-redirector /app/www-redirector +USER www:www +CMD ["/app/www-redirector"] \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..5c93f45 --- /dev/null +++ b/LICENSE @@ -0,0 +1,13 @@ + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + Version 2, December 2004 + + Copyright (C) 2004 Sam Hocevar + + Everyone is permitted to copy and distribute verbatim or modified + copies of this license document, and changing it is allowed as long + as the name is changed. + + DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE + TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION + + 0. You just DO WHAT THE FUCK YOU WANT TO. diff --git a/README.md b/README.md new file mode 100644 index 0000000..c8d046c --- /dev/null +++ b/README.md @@ -0,0 +1,18 @@ +# www-redirector + +This is a tiny HTTP server that redirects all requests permanently to a another server. + +## Configuration + +Use the `REDIRECT_URL` environment variable to set the URL to redirect to. The path and query string of the request will be appended to the URL. + +## Why + +Sometimes it is simpler to have a tiny HTTP server to handle redirects than to configure a web server to do the redirects. +You could do the same thing using any web server, such as Caddy or Nginx. + +This is just a tiny server written mostly for fun. + +## License + +The source code is released under the WTFPL license. See the LICENSE file for more information. \ No newline at end of file diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..66488f5 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,47 @@ +use hyper::service::{make_service_fn, service_fn}; +use hyper::{Body, Request, Response, Server}; +use std::env; +use std::net::SocketAddr; + +async fn redirect( + redirect_url: String, + req: Request, +) -> Result, hyper::Error> { + let path_and_query = req.uri().path_and_query().unwrap(); + println!("Redirecting to {}{}", &redirect_url, path_and_query); + let full_url = format!("{}{}", &redirect_url, path_and_query); + Ok(Response::builder() + .status(301) + .header("location", full_url) + .body(Body::empty()) + .unwrap()) +} + +async fn shutdown_signal() { + // Wait for the CTRL+C signal + tokio::signal::ctrl_c() + .await + .expect("failed to install CTRL+C signal handler"); +} + +#[tokio::main(flavor = "current_thread")] +async fn main() { + let port = env::var("PORT").unwrap_or_else(|_| "8080".to_owned()); + let address = SocketAddr::from(([0, 0, 0, 0], port.parse::().expect("Invalid port"))); + let redirect_url = + env::var("REDIRECT_URL").unwrap_or_else(|_| "https://example.net".to_owned()); + + let make_service = make_service_fn(move |_conn| { + let redirect_url = redirect_url.clone(); + async move { Ok::<_, hyper::Error>(service_fn(move |req| redirect(redirect_url.clone(), req))) } + }); + + let server = Server::bind(&address).serve(make_service); + println!("Listening on http://{}", address); + + let graceful = server.with_graceful_shutdown(shutdown_signal()); + + if let Err(e) = graceful.await { + eprintln!("server error: {}", e); + } +}